Simple Probability and Its Complement

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

Pr(red or yellow) =

• 3/5

• 1/5

• 2/5

• 4/5

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

Pr(NOT red or yellow) =

• 3/5

• 1/5

• 2/5

• 4/5

Pr (even number) =

• 5/7

• 1/7

• 2/7

• 4/7

Pr(even') =

• 5/7

• 1/7

• 2/7

• 4/7

Pr(solid) =

• 1/5

• 4/5

• 3/5

• 2/5

Pr(solid') =

• 1/5

• 4/5

• 3/5

• 2/5

There are 14 girls and 12 boys in a class.

Pr(boy) =

• 7/13

• 6/13

• 4/13

• 12/25

There are 14 girls and 12 boys in a class.

Pr(NOT boy) =

• 7/13

• 6/13

• 4/13

• 12/25

Drew has 5 black T-shirts, 2 purple T-shirts, and 1 orange T-shirt.

Pr(white) =

• 25%

• 100%

• 0%

• 50%

Drew has 5 black T-shirts, 2 purple T-shirts, and 1 orange T-shirt.

Pr(white') =

• 25%

• 100%

• 0%

• 50%