Probability (5.2) SACHS

Probability (Red) =

• 2/6

• 2/4

• 1/4

• 1/2

Probability (Not Blue) =

• 2/8

• 2/4

• 6/8

• 4/5

A class has 12 boys and 16 girls.

One student is chosen at random.

What is the probability it is a girl?

• 16/12

• 12/16

• 12/28

• 16/28

A card is picked at random from a standard deck of 52 playing cards.

Find the probability it is a Diamond.

• 26/52

• 1/4

• 1/3

• 18/52

Neil and Simon the final two competing for the same job.

Neil has a 30% chance of getting the job.

Which statement below is true?

• There is a 70% chance Simon will get the job.

• There is a 30% chance Simon will get the job.

• There is a 30% chance Neil will not get the job.

• There is a 70% chance Simon will not get the job.

A bag contains red and green stars.

One star is taken from the bag at random.

The probability that it is red is 2/7.

What is the probability that it is green?

• 2/7

• 5/2

• 2/5

• 5/7

Ten cards are numbered from 1 to 10. A card is chosen at random.

Find the probability that the number on the chosen card is at least 7.

• 3/10

• 7/10

• 10/10

• 4/10

Ten cards are numbered from 1 to 10. A card is picked at random.

Find the probability that the number on the card picked is less than 9.

• 9/10

• 1/10

• 8/10

• 8/9

How many students only had sisters?

• 1

• 2

• 3

• 16

How many students had brothers?

• 3

• 15

• 18

• 21