Probability Review

The probability of _______ implies that the event is impossible (enter your answer as a number)

If you select a marble without looking, how likely is it that you will pick an orange one?

• certain

• probable

• unlikely

• impossible

If you select a marble without looking, how likely is it that you will pick a black one?

• certain

• probable

• unlikely

• impossible

A basket contains four apples and six peaches. You randomly select one piece of fruit and eat it. Then you randomly select another piece of fruit. What is the probability that both pieces of fruit are apples.

• 2/15
• 3/17
• 1/19
• 6/21

There are 3 red marbles, 4 blue marbles, 2 green marbles, and 6 clear marbles in a burlap bag. One marble is randomly pulled from the bag. What is the probability the marble was green?

• 1/2

• 1/7

• 2/15

• 2/17

A regular 6-sided die is to be rolled once. What is the probability that a number less than or equal to 4 is rolled?

• 1/2

• 1/4

• 5/6

• 2/3

What is the probability of getting any letter that is not A?

• 6/8
• 3/4
• 2/8
• 1/4

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

You flip a coin 20 times and record the results. Is this experimental or theoretical probability?

• Experimental
• Theoretical

What is the sample space when rolling a regular number cube?

• 1

• 2, 4, 6

• 1, 2, 3, 4, 5, 6

• 6