MathModels Unit 2 Lesson 5

A die is rolled twice. What is the probability of rolling a 5 or getting an even number?

2/3

The ratio of the number of girls to the number of boys was 2 to 5. If 2,450 students were present, how many were girls and how many were boys?

Girls: 700 Boys: 1,750

If one card is drawn from a standard deck, what is the probability of getting a jack?

1/13

A fair coin is tossed four times. What is the probability that it will be heads every time?

1/16

From 42 boys who made the team, one will be chosen as kicker and one will be chosen as quarterback. What is the probability of being chosen as the kicker or the quarterback?

1/21

A six-sided die is rolled. What is the probability of rolling a six?

1/6

Two dice are rolled. There are 36 possible outcomes of rolling two dice. What is the probability of getting a total of seven on one roll? (Hint: Start by figuring out how many ways there are to get a total of seven on two dice.)

1/6

A bag contains 10 red, 5 yellow, and 6 blue marbles. What is the probability of pulling out one blue marble and then one red marble without replacing the first blue marble?

1/7

What is the probability of getting a number greater than 2 on two rolls of a six-sided die both times?

4/9

There are 210 boys trying out for football. If 20% made the team, how many were chosen?

42