Probability and Simple Events

A spinner is divided equally and numbered as follows: 1, 1, 2, 3, 3, 4, 1, 1, 2, 4, 1, 2, 3, 4, 1, 2. what is the probability that a pointer will stop at an even prime number?

• 2/3

• 1/4

• 1/3

• 3/4

What is the probability of rolling an even number if a single dice is rolled once?

• 1/2

• 1/4

• 1/6

• 2/3

In a standard deck of cards, What is the probability of picking a heart?

• 2/3

• 1/7

• 1/4

• 3/5

A die is thrown once. What is the probability that the score is a factor of 6?

• 1/6

• 1/2

• 2/3

• 1

There are 4 blue marbles, 5 red marbles, 1 green marble, and 2 black marbles in a bag. If a marble is chosen at random, what it the probability that a marble chosen is blue?

• 1/2

• 2/3

• 1/4

• 1/3

A color wheel contains 4 colors; red, orange, green and blue. If a wheel is spun once what is the probability of getting an orange?

• 1

• 2/3

• 1/4

• 1/3

What is P(tails)?

• 50%

• 1%

• 25%

• 100%

You roll a 6-sided die.

What is P(1)?

• 1/6

• 2/5

• 1/9

• 2/3

There are 18 dogs at the dog park on a busy Saturday. 4 of them are Yorkshire terriers. What is the probability that a randomly selected dog is a Yorkshire terrier?

• 2/9

• 9/2

• 1/4

• 1/5

What is P(7)?

• 1%

• 50%

• 20%

• 25%