probability

A regular 6-sided die is to be rolled one time. What is the probability that the number 5 is rolled?

• 1/5

• 5/6

• 1/6

• 6/5

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

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

What is the probability of spinning an even number?

• 16 2/3%

• 33 1/3%

• 50%

• 75%

What is the probability of landing on the color blue on the spinner?

• 3/3
• 5/3
• 3/12 or 1/4
• 1/3

Melissa rolled a number cube that has sides labeled 1 to 6. What is the probability that she rolled a 2 or a 3?

• 1/6

• 1/3

• 1/2

• 3/4

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

Probability is ...

• the chance that some event will occur.
• a game that involves coins.
• a guarantee.

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

• 30%
• 70%
• 100%
• 0%

A set of all possible outcomes is known as - 

• a list
• a complement
• a sample space
• an event