Complement Probability

How likely are you to NOT roll a 1 on a regular die? (Complement)

• P' = 2/6

• P' = 3/6

• P' = 5/6

• P' = 1/6

What is the complement of flipping a coin 20 times and landing on heads 11 times?

• P' = 1/10

• P' = 11/20

• P' = 9/20

• P' = 10/20

What is the complement of it snowing 3 days out of the week?

• P' = 4/7

• P' = 2/7

• P' = 5/7

• P' = 3/7

What is the complement of choosing a red marble if there are 8 red marbles in a jar of 15?

• P' = 3/15

• P' = 7/15

• P' = 8/15

• P' = 15/8

P(not A) = *Remember to simplify.

• 6/8

• 3/4

• 2/8

• 1/4

P(not A) = 
*Remember to simplify.*

• 6/8

• 3/4

• 2/8

• 1/4

The letters that form the word ALGEBRA are placed in a bowl. What is the probability of not choosing the letter “A”?

• 2/7

• 5/49

• 5/7

• 10/49

P(not A) = 
*Remember to simplify.*

• 6/8

• 3/4

• 2/8

• 1/4

A box has 6 red pens, 8 black pens, 2 blue pens, and 4 purple pens.

P(NOT red or blue)

• 3/5

• 2/5

• 3/10

• 7/10

A bag of candy contains 2 red, 4 yellow, and 4 green candies.

P(NOT red or yellow) =

• 3/5

• 1/5

• 2/5

• 4/5