Probability

The event of selecting a month of the year with 31 days.

• 7/12

• 1/12

• 2/3

• 5/12

When a single die is rolled, find the probability of getting an 8.

• 3/8

• 1

• 1/6

• 0

there are 20 marbles in a container: 4 are red, 5 are blue and 11 are yellow. What is rthe probability that a yellow marble will be picked?

• 1/5

• 11/20

• 9/11

• 1/4

The third person to knock on the door will be a female.

• 2/3

• 1/4

• 1/2

• 1/3

When a card is drawn from the set of 52 cards, it shows a black heart.

• 0

• 1/2

• 1

• 1/4

When a card is drawn from the standard deck of 52 cards, it shows a red ace.

• 1/26

• 1/13

• 3/52

• 1/4

If 3 coins are flipped together, the third coin shows a head.

• 7/8

• 1/2

• 3/8

• 1/4

In a family of 3 children, the eldest child is a boy.

• 1/4

• 1/2

• 2/3

• 1

When a die is rolled, it shows a counting number less than 7.

• 2/3

• 1

• 1/2

• 0

When a die is rolled, the die shows a composite number.

• 2/3

• 1/6

• 1/3

• 1/2