Probabilities

Sid has a bag of skittles - 12 red, 14 green & 10 blue. He chooses one, eats it, and chooses another. What is the probability that he selects a red then a blue?

• 1/12 x 1/10

• 12/36 x 10/35

• 12/36 x 11/35

• 12/36 x 10/36

A sock drawer has 5 pairs of white, 4 pairs of black and 6 pairs of multicolored socks. What is the probability that you choose a white pair, black pair, then a multicolor pair (throwing each pair onto the floor after choosing it)?

• 1/5 x 1/4 x 1/6

• 5/15 x 4/15 x 6/15

• 5/15 x 4/14 x 6/13

• 1/15 x 1/15 x 1/15

You are going to spin a spinner 3 times (with spaces A, B, C, D). What is the probability of spinning a B all 3 times?

• 1/4

• 3/4

• 1/64

• 27/64

Find the probability of getting a 1 or 2 on a die and tails on a quarter. (Which is the correct work?)

• 1/6 x 1/6 x 1/2

• 2/6 x 1/2

• 1/6 x 1/2

• 2/6 x 2

Find the probability of getting a 1 or 2 on a die and tails on a quarter.

• 1/72

• 12

• 1/12

• 1/6

Mr. & Mrs. Mathy are having triplets. What is the probability that they will all be girls? (Which is the correct set up of work?)

• 1/3 x 1/3 x 1/3

• 1/2 x 3

• 1/2 x 1/2 x 1/2

• 1/8

Mr. & Mrs. Mathy are having triplets. What is the probability that they will all be girls?

• 3/2

• 1/27

• 1/3

• 1/8

The letters from the word dependent are placed in a box. If two letters are drawn at random, what is the probability that they will both be consonants?

• 3/9 x 2/8

• 6/9 x 6/9

• 6/9 x 5/8

• 6/9 x 5/9

Find the probability of getting a 5 on a dice and a tails on a dime.

• 5/6 x 1/2

• 1/5 x 1/2

• 1/6 x 1/2

• 1/6 + 1/2

A coin landing on head on one toss and tails on another.

• Independent

• Dependent