The Real Number System

The number 3.125 is which type of real number? a. rational b. irrational c. positive integer d. nonterminating decimal

A

the number 2.3 belongs to which of the following sets? a. irrational b. rational c. integer, rational d. natural, rational

B

what type of number is 4√20? a. rational b. irrational c. integer d. none of these

B

Which of the following is true? a. √3 is irrational b/c the square root of any number is irrational b. √3 is irrational b/c (√3)² is irrational c. √3 is irrational b/c is cannot be expressed as a/b where a and b are integers d. √3 is irrational because the square root of an odd number cannot be rational

C

if you divide 50 by 3, what kind of number is the result? a. positive integer b. negative integer c. rational number d. irrational number

C

which of the following is FALSE? a. all integers are real numbers b. all rational numbers are real numbers c. some integers are not rational numbers d. some real numbers are not irrational numbers

C

which is NOT an integer? a. √12 b. 0 c. √324 d. 1/8

D

which is the best description of the sets to which the number √18 belongs? a. the set of real numbers and the set of integers b. the set of real numbers, the set of integers and the set of rational numbers c. the set of real numbers and the set of rational numbers d. the set of real numbers and the set of irrational numbers

D

which of the following numbers are not rational? a. integers b. terminating decimals c. repeating decimals d. non terminating, non repeating decimals

D

which of the following numbers is irrational? a. 100 b. √9 c. √1 d. √10

D

which of the following statements is false? a. all integers are rational numbers b. some rational numbers are whole numbers c. all rational numbers are ratios of integers d. some irrational numbers are rational numbers

D

which of the following numbers is irrational? a. √11 b. 3/4 c. 2.8 d. 7

a