Probability

A regular 6-sided die is to be rolled once. What is the probability that a number less than 3 is rolled?

• 1/3

• 1/6

• 1/2

• 2/3

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

A spinner has 8 equal regions. Each region is marked with one of the following numbers: 10, 20, 30, 40, 50, 60, 70, 80. What is the probability of an even number being spun on the first roll?

• 1/8

• 1/2

• 1

• 3/8

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

Bag A contains 9 red marbles and 3 green marbles. Bag B contains 9 black marbles and 6 orange marbles. Find the probability of selecting one green marble from bag A and one black marble from bag B.

• 3/20
• 1/4
• 3/31
• 2/27

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement. P(1st orange then green)

• 1/15
• 2/15
• 3/31
• 1/5

A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)

• 2/9
• 1/3
• 1/2
• 1/4

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

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