CIS 41A Ch3

49) Given that the following code is incorrect, what code would fix the following code snippet? grade = int(input("Enter student grade: ")) if grade >= 90 : letterGrade = "A" if grade >= 80 : letterGrade = "B" if grade >= 70 : letterGrade = "C" if grade >= 60 : letterGrade = "D" else : letterGrade = "E" print(letterGrade) 1. Change the if statements to elif statements (except the first one) 2. Change the if statements to else statements (except the first one) 3. Reverse the order of the if statements 4. Change the last statement to if instead of else

1. Change the if statements to elif statements (except the first one)

17) What is the output of the following code snippet if count contains 56? if count % 2 == 0 : print("Count is an even number") else : print("Count is an odd number") 1. Count is an even number 2. Count is an odd number 3. Nothing, there is a syntax error 4. Nothing, the program runs but does not print any output

1. Count is an even number

14) What is the error in this statement? if count = max : print("You win") 1. Equality is evaluated using two equal signs (==), not one. 2. The print function should not be indented 3. There must be an else statement 4. Nothing, if count equals max, it would print "You win"

1. Equality is evaluated using two equal signs (==), not one.

32) What is the definition of a nested statement? 1. A decision statement that is contained inside the statement block of another decision statement 2. A compound statement that consists of a header and a statement block 3. A decision statement that immediately follows another decision statement at the same indentation level 4. A statement that is used to validate user input

1. A decision statement that is contained inside the statement block of another decision statement

46) What error will Python display when it attempts to execute the following if/else statement? if a = b : print("Equal") else : print("Not Equal") if a > b : print("a is larger") else : print("b is larger") 1. Python will display an error indicating that = is invalid sytax 2. Python will display an error indicating that an if statement cannot reside inside the body of an else 3. Python will display an error indicating that there is a problemwith the indentation 4. No error will be displayed

1. Python will display an error indicating that = is invalid sytax

7) The following code snippet contains an error. What is the error? cost = int(input("Enter the cost: ")) if cost > 100 cost = cost - 10 print("Discounted cost:", cost) 1. Syntax error: missing colon after if statement 2. Logical error: use of an uninitialized variable 3. Syntax error: missing an else statement 4. Syntax error: incorrect indentation

1. Syntax error: missing colon after if statement

42) Consider the following code segment: if a == b : print("W") else : print("X") if b == c : print("Y") else : print("Z") If a, b and c are all 0 then the output generated by this code segment is: 1. W 2. W followed by Y on the next line 3. X followed by Y on the next line 4. W followed by X on the next line, followed by Y on the next line

1. W

73) The following logical expression will 'short-circuit'... quantity > 0 and price/quantity < 10 1. When quantity is equal to 0 2. When quantity is equal to 5 3. When price/quantity is less than 10 4. When price/quantity is greater than 10

1. When quantity is equal to 0

39) Consider the following code segment: if a > b : print("X") if a == b : print("Y") What is displayed if a is 1 and b is 0? 1. X 2. Y 3. X followed by Y on the next line 4. Nothing

1. X

94) Which of the following checks to see if there is a comma anywhere in the string variable name? 1. if "," in name : 2. if name.contains(",") : 3. if "," not in name : 4. if name.startswith(",") :

1. if "," in name :

89) Which of the following conditions is True only when the variables a, b, and c contain three different values? 1. if a != b and a != c and b != c : 2. if a != b or a != c or b != c : 3. if not (a == b and b == c and a == c) : 4. if a != b != c :

1. if a != b and a != c and b != c :

51) Consider the following code snippet: number = int(input("Enter a number: ")) if number > 30 : ... elif number > 20 : ... elif number > 10 : ... else : ... Assuming that the user input is 40, which block of statements is executed? 1. if number > 30 : ... 2. else if number > 20 : ... 3. else if number > 10 : ... 4. else : ...

1. if number > 30 : ...

74) Using De Morgan's law, what is the equivalent to this statement? if not (state == "PA" or state == "OH") 1. if state != "PA" and state != "OH" 2. if state != "PA" or state != "OH" 3. if state == "PA" and state == "OH" 4. if state == "PA" or state == "OH"

1. if state != "PA" and state != "OH"

70) Given two variables x and y, how do you test whether at least one of them is zero? 1. if x == 0 or y == 0 : 2. if x = 0 or y = 0 : 3. if x == 0 and y != 0 or y == 0 and x != 0 : 4. if x == 0 and y != 0 and y == 0 and x != 0 :

1. if x == 0 or y == 0 :

82) Which of the following conditions is true only when the integer variable middle is between 0 and 10 inclusive? 1. middle >= 0 and middle <= 10 2. 0 < middle < 10 3. 0 <= middle or middle <= 10 4. middle > 0 and middle < 10

1. middle >= 0 and middle <= 10

72) What value causes the following logical expression to 'short-circuit'? if temp >= 32 and temp <= 100 1. temp = 0 2. temp = 32 3. temp = 100 4. temp = 75

1. temp = 0

8) Assuming that the user provides 95 as input, what is the output of the following code snippet? y = int(input("Please enter a number: ")) if y > 300 : x = y else : x = 0 print("x:", x) 1. x: 0 2. x: 95 3. x: 300 4. There is no output due to a syntax error

1. x: 0

24) A store provides a 10% discount on items with a price of at least $100. Otherwise, no discount is applicable. Which of the following DOES NOT correctly compute the discount amount when the item's price is stored in the price variable? 1. discount = 0 if price >= 100 : discount = 0.10 * price 2. discount = 0.10 * price if price <= 100 : discount = 0 3. discount = 0 if price >= 100 : discount = price / 10 4. discount = 10 if price >= 100 : discount = 0.1 * price else : discount = 0

2. discount = 0.10 * price if price <= 100 : discount = 0

96) What value is printed by the following code snippet? name = "John R. Johnson" firstName = "John" location = name.find(firstName) print(location) 1. -1 2. 0 3. 8 4. 1

2. 0

64) Consider the following code segment: if a == 0 : print("a is 0") elif a < 0 : print("a is less than 0") else : print("a is greater than 0") What is the minimum number of test cases needed to test every line of code in this segment? 1. 2 2. 3 3. 4 4. 5

2. 3

84) Given the following code snippet: MIN_SPEED = 45 MAX_SPEED = 65 speed = 55 if not (speed < MAX_SPEED) : speed = speed - 10 if not (speed > MIN_SPEED) : speed = speed + 10 print(speed) What output is produced? 1. 45 2. 55 3. 65 4. 50

2. 55

58) Consider the follow code segment. It is supposed to convert numeric marks to letter grades. However, it may contain a bug. Examine the program, and identify what bug, if any, is present. grade = "F" if mark >= 80 : grade = "A" if mark >= 70 : grade = "B" if mark >= 60 : grade = "C" if mark >= 50 : grade = "D" 1. The greater than or equal signs need to be replaced with equal signs 2. All instances of if, except the first, need to be replaced with elif 3. All instances of if, except the first, need to be replaced with else 4. There is nothing wrong with the code segment (it works as intended)

2. All instances of if, except the first, need to be replaced with elif

31) Given the following list of strings, what is the correct order using lexicographic ordering: "Ann", "amy", "Heather", "hanna", "joe","john", "Leo", "Jim" ? 1. amy, Ann, hanna, Heather, Jim, joe, john, Leo 2. Ann, Heather, Jim, Leo, amy, hanna, joe, john 3. amy, hanna, joe, john, Ann, Heather, Jim, Leo 4. Leo, john, joe, Jim, Heather, hanna, Ann, amy

2. Ann, Heather, Jim, Leo, amy, hanna, joe, john

48) What is the wrong with the following code snippet? grade = int(input("Enter student grade: ")) if grade >= 90 : letterGrade = "A" if grade >= 80 : letterGrade = "B" if grade >= 70 : letterGrade = "C" if grade >= 60 : letterGrade = "D" else : letterGrade = "E" print(letterGrade) 1. Everyone will get an "E" 2. Anyone with a grade higher than 60 will receive a "D" 3. Nothing is wrong, students will get the correct grade 4. The code block will not compile

2. Anyone with a grade higher than 60 will receive a "D"

68) Which of the following variables is used to store a condition that can be either True or False? 1. Logical 2. Boolean 3. Algebraic 4. Conditional

2. Boolean

52) Consider the following code snippet: number = int(input("Enter a number: ")) if number < 10 : print("Too small") elif number < 50 : print("Intermediate") elif number < 100 : print("High") else : print("Too high") Assuming that the user input is 60, what is the output of the this code snippet? 1. Too high 2. High 3. Intermediate 4. Too small

2. High

63) When testing code for correctness, it always makes sense to 1. Aim for complete coverage of all decision points 2. Identify boundary cases and test them 3. Check all cases using hand-tracing 4. Assume invalid input will never occur

2. Identify boundary cases and test them

85) Given the following code snippet: score = 0 price = 100.0 if score > 0 and price < 200 and price / score > 10 : print("buy!") Which of the following statements is true? 1. The output is buy! 2. The code snippet runs, but there is no output 3. The code snippet has syntax errors 4. The code snippet causes a divide-by-zero exception

2. The code snippet runs, but there is no output

9) What is printed by the following code snippet if itemCount contains a value of 10 and cost contains 80: if itemCount > 5 : discount = 0.8 totalCost = cost * discount print("Total discounted price is:", totalCost) 1. Nothing, the program will run but not print any results 2. Total discounted price is: 64.0 3. Total discounted price is: 0.0 4. Total discounted price is: 16.0

2. Total discounted price is: 64.0

65) What two values does the Boolean (bool) data type have in Python? 1. Yes / No 2. True / False 3. 0 / 1 4. -1 / 1

2. True / False

77) Consider the following code snippet: age = int(input("Enter your age: ")) if age < 13 : print("Child", end="") if age >= 13 and age <= 19 : print("Teen", end="") if age > 19 and age < 30 : print("Young adult", end="") if age >= 30 and age <= 50 : print("Adult", end="") if age > 50 : print("Young at heart", end="") Assuming that the user enters 55 as the age, what is the output? 1. Teen 2. Young at heart 3. Child 4. Adult

2. Young at heart

66) Which operators listed below are considered boolean operators: 1. < / > 2. and / or 3. == / != 4. <= / >=

2. and / or

19) The operator >= stands for 1. greater than 2. greater than or equal to 3. not equal to 4. this is not a valid Python operator

2. greater than or equal to

1) What statement is used to implement a decision? 1. while 2. if 3. for 4. import

2. if

76) Consider the following code snippet: attendance = True failed = False Which of the following if statements include a condition that evaluates to True? 1. if attendance == "true" : 2. if attendance : 3. if failed : 4. if attendance == failed :

2. if attendance :

86) Which of the following options checks that city is neither Atlanta or Philadelphia? 1. if not city == "Atlanta" or not city == "Philadelphia" 2. if not (city == "Atlanta" or city == "Philadelphia") 3. if not (city == "Atlanta" and city == "Philadelphia") 4. if not city == "Atlanta" or city == "Philadelphia"

2. if not (city == "Atlanta" or city == "Philadelphia")

78) Which of the following expressions represents a legal way of checking whether a value assigned to the num variable falls within the range 0 to 150 (inclusive)? 1. if num >= 150 and num <= 0 : 2. if num >= 0 and num <= 150 : 3. if num >= 0 or num <= 150 : 4. if num >= 150 or num <= 0 :

2. if num >= 0 and num <= 150 :

28) Which of the following if statements is problematic because of the limited precision of floating-point numbers? 1. if 4 // 3 == 1 : 2. if sqrt(2) * sqrt(2) == 2.0 : 3. if "10" == 5 : 4. if 4 <= 4 :

2. if sqrt(2) * sqrt(2) == 2.0 :

75) Using De Morgan's law, what is the equivalent to this statement? if not (state == "PA" and state == "OH") 1. if state != "PA" and state != "OH" 2. if state != "PA" or state != "OH" 3. if state == "PA" and state == "OH" 4. if state == "PA" or state == "OH

2. if state != "PA" or state != "OH"

53) Consider the following code snippet. num1 = 0 num2 = 0 num3 = 0 num4 = 0 num5 = 0 num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) if num1 < num2 : num3 = num1 else : num3 = num2 if num1 < num2 + 10 : num4 = num1 elif num1 < num2 + 20 : num5 = num1 print("num1 =", num1, "num2 =", num2, "num3 =", num3,"num4 =", num4, "num5 =", num5) Assuming that the user enters the numbers 20 and 12 as the two input values, what is the output of the code snippet? 1. num1 = 20 num2 = 12 num3 = 20 num4 = 0 num5 = 20 2. num1 = 20 num2 = 12 num3 = 12 num4 = 20 num5 = 0 3. num1 = 20 num2 = 12 num3 = 12 num4 = 0 num5 = 20 4. num1 = 20 num2 = 12 num3 = 20 num4 = 20 num5 = 0

2. num1 = 20 num2 = 12 num3 = 12 num4 = 20 num5 = 0

98) What string method can be used to determine if the string contained in the variable text only consists of letters? 1. text.isalnum() 2. text.isalpha() 3. text.isdigit() 4. text.islower()

2. text.isalpha()

34) Which of the following values make the expression not x == y and z > x true? 1. x = 10, y = 10, z = 15 2. x = 10, y = 20, z = 15 3. x = 10, y = 2, z = 5 4. x = 10, y = 20, z = 10

2. x = 10, y = 20, z = 15

6) Assuming that the user provides 303 as input, what is the output of the following code snippet? y = int(input("Please enter a number: ")) if y > 300 : x = y else : x = 0 print("x:", x) 1. x: 0 2. x: 303 3. x: 300 4. There is no output due to a syntax error.

2. x: 303

55) Consider the following code snippet: age = int(input("Enter your age: ")) if age < 10 : print("Child") if age < 30 : print("Young Adult") if age < 70 : print("Old") if age < 100 : print("Impressively old") Assuming that the user inputs 80 as the age, what is the output? 1. Child Young adult Old 2. Young adult Old 3. Impressively old 4. Child Young adult Old Impressive old

3. Impressively old

38) Which of the following code segments is an example of a nested if statement? 1. if a == b : print(a) 2. if a == b : print(a) else : print(b) 3. if a == b : print(a) if c == d : print(c) 4. a = a - 1 if a > 0 else a = a + 1

3. if a == b : print(a) if c == d : print(c)

80) Given the following code snippet: grade = int(input("Enter student grade: ")) if grade >= 90 : letterGrade = "A" elif grade >= 80 and grade < 90 : letterGrade = "B" elif grade >= 70 and grade < 80 : letterGrade = "C" elif grade >= 60 and grade < 70 : letterGrade = "D" else : letterGrade = "E" print(letterGrade) What is value of |grade| when the user enters 75? 1. "A" 2. "B" 3. "C" 4. "D"

3. "C"

22) What is the output of the following code snippet if the input is 34? number = int(input("Please enter a number: ")) if number != 20 : number = number + 1 else : number = number - 1 print(number) 1. 34 2. 33 3. 35 4. 36

3. 35

11) Consider the following code segment: if count > 0 : x = x + 1 print(x) If count is initialized to -1 and x is initialized to 4 then the value displayed by this code segment is: 1. -1 2. 0 3. 4 4. 5

3. 4

67) Consider the following code snippet: temp = int(input("Enter Celsius temperature: ")) if temp > 0 and temp < 100 : print("Liquid") if temp <= 0 or temp >= 100 : print("Not liquid") Assuming the user enters a value of 120, what will be the output: 1. Nothing is printed 2. Liquid 3. Not Liquid 4. LiquidNotLiquid

3. Not Liquid

16) What is the output of the following code snippet if count contains 56? if count % 2 == 0 : print("Count is an even number") else : print("Count is an odd number") 1. Count is an even number 2. Count is an odd number 3. Nothing, there is a syntax error 4. Nothing, the program runs but does not print any output

3. Nothing, there is a syntax error

56) Consider the following code snippet: age = int(input("Enter your age:")) if age < 10 : print("Child", end="") if age < 30 : print("Young Adult", end="") if age < 70 : print("Old", end="") if age < 100 : print("Impressively old", end="") Assuming that the user inputs 30 as the age, what is the output? 1. ChildYoung adultOldImpressively old 2. Young adultOldImpressively old 3. OldImpressively old 4. Impressively old

3. OldImpressively old

45) What error will Python display when it attempts to execute the following if/else statement? if a == b : print("Equal") else : print("Not Equal") if a > b : print("a is larger") else : print("b is larger") 1. Python will display an error indicating that == should be replaced with = 2. Python will display an error indicating that an if statement cannot reside inside the body of an else 3. Python will display an error indicating that there is a problem with the indentation 4. No error will be displayed

3. Python will display an error indicating that there is a problem with the indentation

3) Which of the following statements is true about the if statement? 1. The if statement can have only one condition that evaluates to an integer value. 2. The if block is optional. 3. The else block is optional. 4. The if and else blocks can be aligned to any indentation

3. The else block is optional.

21) Assuming the user enters 15 as input, what is the output of the following code snippet? number = int(input("Please enter a number: ")) if number >= 20 : print("The number is big") else : print("The number is small") 1. There is no output due to a syntax error 2. The number is big 3. The number is small 4. The program runs successfully but does not print any output

3. The number is small

87) Assuming a user enters 30, 55, and 10 as the input, what is the output of the following code snippet? num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) num3 = int(input("Enter a number: ")) if not (num1 > num2 and num1 > num3) : print(num1) elif not(num2 > num1 and num2 > num3) : print(num2) elif not (num3 > num1 and num3 > num2) : print(num3) 1. 55 2. 10 3. 0 4. 30

4. 30

23) Assuming that the user enters a value of 45, what is the output of the following code snippet? number = int(input("Please enter a number: ")) if number < 100 : number = number + 5 if number < 500 : number = number - 2 if number > 15 : number = number + 1 else : number = number - 1 print(number) 1. 105 2. 45 3. 43 4. 49

4. 49

54) What is the value of the price variable after the following code snippet is executed? price = 42 if price < 40 : price = price + 10 if price > 30 : price = price * 2 if price < 100 : price = price - 20 1. 42 2. 52 3. 84 4. 64

4. 64

57) Consider the following code snippet: age = int(input("Enter your age:")) if age < 10 : print("Child", end="") if age < 30 : print("Young Adult", end="") if age < 70 : print("Old", end="") if age < 100 : print("Impressively old", end="") Assuming that the user inputs 5 as the age, what is the output? 1. Child 2. ChildYoung Adult 3. ChildYoung AdultOld 4. ChildYoung adultOldImpressively old

4. ChildYoung adultOldImpressively old

47) What is the output of the following code snippet when the user enters 75 as the grade? grade = int(input("Enter student grade: ")) if grade >= 90 : letterGrade = "A" if grade >= 80 : letterGrade = "B" if grade >= 70 : letterGrade = "C" if grade >= 60 : letterGrade = "D" else : letterGrade = "E" print(letterGrade) 1. A 2. B 3. C 4. D

4. D

26) In Python, which of the following orderings is used to compare strings? 1. Semantic 2. Alphabetic 3. Syntatic 4. Lexicographic

4. Lexicographic

40) Consider the following code segment: if a > b : print("X") if a == b : print("Y") What is displayed if a is 0 and b is 0? 1. X 2. Y 3. X followed by Y on the next line 4. Nothing

4. Nothing

41) Consider the following code segment: if a > b : print("X") if a == b : print("Y") What is displayed if a is 1 and b is 2? 1. X 2. Y 3. X followed by Y on the next line 4. Nothing

4. Nothing

18) What type of operator is <= operator? 1. Lexicographic 2. Arithmetic 3. Inequality 4. Relational

4. Relational

60) Consider the following code segment. It is designed to convert letter grades to grade points. Examine the program, and identify what bug, if any, is present. if letter == "A" : gradePoints = 4.0 elif letter == "B" : gradePoints = 3.0 elif letter == "C" : gradePoints = 2.0 elif letter == "D" : gradePoints = 1.0 else : gradePoints = 0.0 1. The double equal signs need to be replaced with greater than or equal signs 2. All instances of elif need to be replaced with else 3. The order of the conditions (and bodies) must be changed 4. There is nothing wrong with the code segment (it works as intended)

4. There is nothing wrong with the code segment (it works as intended)

36) Which of the following options refers to the technique of simulating program execution on a sheet of paper? 1. Compiling 2. Prototyping 3. Debugging 4. Tracing

4. Tracing

43) Consider the following code segment: if a == b : print("W") else : print("X") if b == c : print("Y") else : print("Z") If a is 0, b is 1 and c is 0 then the output generated by this code segment is: 1. W 2. X 3. X followed by Y on the next line 4. X followed by Z on the next line

4. X followed by Z on the next line

10) What is the output of the following code snippet if the cost contains 100: if cost > 150 : discount = 0.8 * cost else : discount = cost print("Your cost is:", discount) 1. Nothing, the code contains a syntax error 2. Your cost is: 0 3. Your cost is: 80 4. Your cost is: 100

4. Your cost is: 100

62) The flowchart shows the order in which steps should be executed, and the diamond-shaped boxes indicate: 1. input 2. algorithms 3. tasks 4. decision statements

4. decision statements

27) Which condition will cause the statement block of the if statement to execute only when count is 0? 1. if count = 0 : 2. if count < 0 : 3. if count =< 0 : 4. if count == 0 :

4. if count == 0 :

95) Which of the following checks to see if the string variable sentence starts with the string "Dear"? 1. if "Dear" in sentence : 2. if sentence.find("Dear") : 3. if "Dear" not in sentence : 4. if sentence.startswith("Dear") :

4. if sentence.startswith("Dear") :

92) Suppose that b is False and x is 0. Which of the following expressions evaluates to True? 1. b or x == 1 2. b and x == 0 3. not b and x == 1 4. not b or x == 1

4. not b or x == 1

25) Which of the following conditions is true, given that num1 contains 3 and num2 contains 4? 1. num1 + 1 < num2 2. num1 + 1 > num2 3. num1 + num2 != 7 4. num1 - num2 <= 0

4. num1 - num2 <= 0

91) Water is liquid between 0 and 100 degrees Celsius. The following code segment should display a message if the water is *not* liquid. For this question, we will assume that water is liquid if it is exactly 0 degrees or exactly 100 degrees. if _________________ : print("The water is not liquid") What condition should be placed in the blank to achieve the desired behavior? 1. temp < 0 2. temp > 100 3. temp < 0 and temp > 100 4. temp < 0 or temp > 100

4. temp < 0 or temp > 100

What string method can be used to determine if all characters within a string are lowercase? 1. text.isalnum() 2. text.isalpha() 3. text.isdigit() 4. text.islower()

4. text.islower()

37) Assuming that a user enters 25 for the price of an item, which of the following hand-trace tables is valid for the given code snippet? price = 0 status = "" price = float(input("Enter the price for your item: ")) if price >= 50 : status = "reasonable" if price >= 75 : status = "costly" else : status = "inexpensive" if price <= 25 : status = "cheap" 1. price status 0 "inexpensive" 25 "cheap" 2. price status 0 "inexpensive" 25 "reasonable" 3. price status 0 "inexpensive" 25 "reasonable" "costly" 4. price status 0 "inexpensive" 25 "costly"

1. price status 0 "inexpensive" 25 "cheap"

97) What value is printed by the following code snippet? name = "John R. Johnson" firstName = "Joe" location = name.find(firstName) print(location) 1. -1 2. 0 3. 8 4. 1

1. -1

12) Consider the following code segment: numPizzas = 1 numPeople = 4 if numPeople == 5 : numPizzas = 2 After this code segment executes, what value is in the variable numPizzas? 1. 1 2. 2 3. 4 4. 5

1. 1

13) Consider the following code segment: c = 2 b = 1 if b == 0 : c = c + 1 else : c = c - 1 print(c) What value is printed by this code segment? 1. 1 2. 2 3. 3 4. 4

1. 1

88) Assuming a user enters 30, 55, and 10 as the input, what is the output of the following code snippet? num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) num3 = int(input("Enter a number: ")) if num1 > num2 and num1 > num3 : print(num1) elif num2 > num1 and num2 > num3 : print(num2) elif num3 > num1 and num3 > num2 : print(num3) 1. 55 2. 10 3. 0 4. 30

1. 55

2) What are the two parts of an if statement? 1. A condition and a body 2. A check and an increment 3. An increment and a body 4. An increment and a return value

1. A condition and a body

59) Consider the follow code segment. It is designed to classify widgets as too small if they are less than 10mm in diameter or too large if they are 15mm in diameter or more. Otherwise they should be classified as just right. However, this code may contain a bug. Examine the program, and identify what bug, if any, is present. if size >= 0 : print("Too small") elif size >= 10 : print("Just right") elif size >= 15 : print("Too big") 1. The greater than or equal signs need to be replaced with greaterthan signs 2. All instances of elif need to be replaced with else 3. The order of the conditions (and bodies) must be changed 4. There is nothing wrong with the code segment (it works asintended)

3. The order of the conditions (and bodies) must be changed

5) Which of the following correctly identifies what is wrong with the code snippet below: if y > 300 : x = y else : x = 0 print("x:", x) 1. Nothing, the program runs as intended 2. The statement after the if statement must be indented 3. The statement after the if statement and the statement after the else statement must be indented 4. No colon is needed after the else statement

3. The statement after the if statement and the statement after the else statement must be indented

44) Consider the following code segment: if a == b : print("W") else : print("X") if b == c : print("Y") else : print("Z") If a is 0, b is 1 and c is 1 then the output generated by this code segment is: 1. W 2. X 3. X followed by Y on the next line 4. X followed by Z on the next line

3. X followed by Y on the next line

90) Consider the following code segment. It should display a message only if the cost is between 50 and 75 dollars. The message should also be displayed if the cost is exactly 50 dollars or exactly 75 dollars. if _________________ : print("The cost is in the desired range") What condition should be placed in the blank to achieve the desired behavior? 1. cost > 50 2. cost < 75 3. cost >= 50 and cost <= 75 4. cost >= 50 or cost <= 75

3. cost >= 50 and cost <= 75

15) What is the opposite of this condition: count > 10? 1. count >= 10 2. count < 9 3. count <= 10 4. count <= 9

3. count <= 10

61) Flowcharts are made up of all the following elements, EXCEPT: 1. elements for tasks 2. elements for input/output 3. elements for pseudocode 4. elements for decisions

3. elements for pseudocode

79) Which of the following expressions represents a legal way of checking whether a value assigned to the num variable is either less than 100 or more than 200? 1. if num < 100 and num > 200 : 2. if num < 100 and num > 200 : 3. if num < 100 or num > 200 : 4. if num <= 100 or num >= 200 :

3. if num < 100 or num > 200 :

29) Consider the following code segment: s1 = "CAT" s2 = "cat" Which of the following if statements has a condition that evaluates to True? 1. if s1 == s2 : 2. if s1 = s2 : 3. if s1 < s2 : 4. if s1 >= s2 :

3. if s1 < s2 :

71) Rewrite the following algebraic expression to an equivalent Python expression: 32 <= temp <= 100 1. if temp <= 32 and temp <= 100 2. if temp <= 32 or temp <= 100 3. if temp >= 32 and temp <= 100 4. if temp >= 32 or temp <= 100

3. if temp >= 32 and temp <= 100

20) Which statement correctly tests if the user entered the letter Y? 1. if userInput = "y" : 2. if userInput = "Y" : 3. if userInput == "Y" : 4. if userInput == "y" :

3. if userInput == "Y" :

4) Which of the following is the correct syntax for an if statement? 1. if (x < 10) size = "small"; 2. if (x < 10) size = "small" else (x < 20) size = "medium" 3. if x < 10 : size = "small" else : size = "medium" 4. if x < 10 : size = "small" else size = "medium"

3. if x < 10 : size = "small" else : size = "medium"

69) Given two variables x and y, how do you test whether exactly one of them is zero? 1. if x == 0 or y == 0 : 2. if x = 0 or y = 0 : 3. if x == 0 and y != 0 or y == 0 and x != 0 : 4. if x == 0 and y != 0 and y == 0 and x != 0 :

3. if x == 0 and y != 0 or y == 0 and x != 0 :

83) Given that the following code snippet: isFelon = False answer = input("have you ever committed a felony? ") if answer == "Yes" or answer == "yes" : isFelon = True age = int(input("what is your age? ")) Which statement assigns the variable mayVote a value of True if a person may vote if they are 18 or older and not a felon? 1. mayVote = age > 18 or not isFelon 2. mayVote = not ( age >= 18 and isFelon) 3. mayVote = age >= 18 and not isFelon 4. mayVote = not ( age >= 18 or isFelon)

3. mayVote = age >= 18 and not isFelon

30) Which statement evaluates to True when comparing the two strings: name1 = "Heather" name2 = "hanna" 1. name1 == name2 2. name1 > name2 3. name1 < name2 4. Relational operators cannot be used to compare strings

3. name1 < name2

81) Which of the following operators is used to invert a conditional statement? 1. or 2. and 3. not 4. equal

3. not

93) Suppose that b is False and x is 0. Which of the following expressions evaluates to True? 1. not b and x == 1 2. b or x == -1 3. not b or b 4. x == 1 or x == -1

3. not b or b

100) What string method can be used to determine if the string contained in the variable text only consists of numbers? 1. text.isalnum() 2. text.isalpha() 3. text.isdigit() 4. text.islower()

3. text.isdigit()

35) What is the output of the following code snippet? num1 = 100 if num1 < 100 : if num1 < 50 : num1 = num1 - 5 else : num1 = num1 - 10 else : if num1 > 150 : num1 = num1 + 5 else : num1 = num1 + 10 print(num1) 1. 95 2. 100 3. 105 4. 110

4. 110

50) What is the output of the following code snippet? x = 20 if x <= 20 : print("1", end="") if x <=40 : print("2", end="") if x <= 30 : print("3", end="") 1. 1 2. 2 3. 3 4. 123

4. 123

33) Assuming a user enters 30, 20, and 10 as the input values, what is the output of the following code snippet? num1 = int(input("Enter a number: ")) num2 = int(input("Enter a number: ")) num3 = int(input("Enter a number: ")) if num1 > num2 : if num1 > num3 : print(num1) else : print(num3) else : if num2 > num3 : print(num2) else : print(num3) 1. 0 2. 10 3. 20 4. 30

4. 30