Basics of Probability and Counting

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

• 5/11

• 5/6

• 1/3

• 5

What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%

What is the probability of pulling a red marble out of a jar of marbles that have 10 green marbles, 7 red marbles and 3 blue marbles?

• 1/7

• 7/20

• 7/10

• 3/10

If you were to roll the die one time what is the probability of it landing on a 2?

• 2 out of 6

• 2 out of 2

• 1 out of 6

• 1 out of 1

A bag has 3 red marbles, 2 blue and 4 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/9

• 1/9

• 1/3

What is the probability that you choose blue? *simplify

• 8/26

• 4/13

• 8/25

• 1/3

Probability can be written as ...

• a fraction

• a decimal

• a percent

• all of the above

What is the probability of flipping a coin and getting heads?

• 1/2

• 1/3

• 1/4

• Never, Tails never fails.

The probability of it raining today is 30%.  What is the probability that it will NOT rain?

• 30%

• 70%

• 100%

• 0%

What is the probability of spinning a 2 on the spinner?

• 1/2

• 1/3

• 1/8

• 1/4