Basics of Probability and Counting

If I flip a coin 10 times, how many times should I get heads?

• 1

• 10

• 3

• 5

The spinner is divided into eight equal parts. Find the theoretical probability of landing on the given section of the spinner.P(white)=

• 1/8

• 5/8

• 7/8

• 3/7

Find the probability of rolling greater than a 1 on a single die.

• 6/6

• 5/6

• 4/6

• 1/6

Probability can be between what two numbers?

• 10 and 20

• 0 and 100

• 0 and 1

• All Numbers are possible

What is the probability of spinning red?

• 0

• 1/2

• 3/4

• 1

What is the probability of spinning green or blue?

• 0

• 5/12

• 1/2

• 3/4

The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.

• True

• False

If 33% of the students at Harnett Central have a pet, then what is the probability of the complement of this event?

• 33%

• 77%

• 67%

• 50%

Mrs. Moreno has a box containing 6 lipsticks, 4 eye shadows, 6 eye liners, and 5 mascaras. If she randomly chooses one item from the box, what is the probability that she will grab a lipstick?

• 3/7

• 15/21

• 5/7

• 6/21

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