Complementary Probability

The probability of rolling a 2 or 3 on a number cube and the probability of rolling a 1, 4, 5, or 6 on a number cube.

• Complementary

• Not complementary

A fair spinner has yellow, green, red, orange, and blue sections. The probability that you spin a red or blue on the spinner and the probability that you spin a orange or red.

• Complementary

• Not Complementary

The probability of rolling a 1 on a number cube is 1/6. What is the complementary probability of rolling a 2, 3, 4, 5, or 6?

• 5/6

• 2/3

• 1/6

• 1/2

In the ABC's the probability of choosing a vowel is 5/26. What is the complementary probability?

• 5/26

• 2/5

• 10/13

• 21/26

You have a bag of skittles with 7 red, 2 purple, 5 lemon, 8 orange, and 4 green. 

The favorable outcome is selecting orange.   What is the probability of the complementary outcome?  (put in simplest form)

• 6/13

• 9/13

• 11/26

• 4/13

You have a bag of skittles with 7 red, 2 purple, 5 lemon, 8 orange, and 4 green. 

The favorable outcome is selecting red or purple. What is the probability of the complementary outcome?  (put in simplest form)

• 9/26

• 6/13

• 10/13

• 17/26

You have a bag of skittles with 7 red, 2 purple, 5 lemon, 8 orange, and 4 green. 

The favorable outcome is selecting red, purple, or green.   What is the probability of the complementary outcome?  (put in simplest form)

• 1/2

• 9/26

• 6/13

• 10/13

You have a bag of skittles with 7 red, 2 purple, 5 lemon, 8 orange, and 4 green. 

The favorable outcome is selecting lemon or red.   What is the probability of the complementary outcome?  (put in simplest form)

• 8/13

• 4/13

• 7/13

• 1/2

Use a tree diagram to help you determine how many options you have for your sandwich.

Bread: White or wheat

Meat: Ham, turkey, chicken

Cheese: Cheddar, Swiss, Provolone

• 20

• 24

• 16

• 18

Use a tree diagram to help you determine how many options you have for your outfit.

Top: Shirt, Jacket, Hoodie, Sweater

Pants: Shorts or Pants

Shoes: Flip flops, Jordan's, Hey Dudes

• 24

• 26

• 28

• 30