Compound Probability

A bag contains 5 blue marbles, 4 red marbles, and 3 orange marbles. Michelle picks one without looking, replaces it and picks another one. What is the probability that she picks two that are not orange?

• 9/16

• 3/4

• 9/144

• 5/16

You are at the movies with your friends and decided to buy a small bag of gummy bears. There are 4 red bears, 5 green bears, and 3 yellow bears in the bag. What is the probability that you will first pick a yellow gummy bear, then pick a red gummy bears?

• 1/12

• 1/11

• 3/132

• 1/4

A spinner consists of two A’s, three B’s, and three C’s. What is the probability of  spinning a B?

• ²/₈
• ²/₃
• ³/₈
• ¹/₄

Tags

CCSS.7.SP.C.7B

There are 6 red marbles, 5 green marbles, and 4 yellow marbles in a bag. If Joe picks 2 marbles one after the other without replacement, then what is the probability that both are red in color?

• 2/5

• 6/35

• 4/25

• 1/7

There are 2 violet balls and 4 pink balls in a bag. If two balls are drawn one after the other, then what is the probability of getting violet first and pink next, if the first ball drawn is replaced?

• 1/3

• 2/9

• 1/6

• 4/15

A jar contains 2 green marbles, 4 blue marbles, 3 yellow marbles, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then a second marble is chosen at random. Find the probability of the first marble being green and the second marble being yellow. 

• 4/121
• 8/121
• 3/121
• 6/121

You roll a six sided die three times in a row. What is the probability of rolling an even number three times in a row?

• 3/100

• 1/2

• 1/6

• 1/8

Bag A contains 9 red marbles and 3 green marbles.

Bag B contains 9 black marbles and 6 orange marbles.

Find the probability of selecting one green marble from bag A and one black marble from bag B.

• 3/20

• 1/4

• 3/31

• 2/27

A piggy bank contains 4 quarters, 18 dimes, 10 nickels, and 8 pennies. A coin is chosen at random, not replaced, then another is chosen.

Find the probability of selecting a penny, then a dime.

• 1/8

• 9/100

• 6/65

• 17/195

A piggy bank contains 4 quarters, 18 dimes, 10 nickels, and 8 pennies. A coin is chosen at random, not replaced, then another is chosen.

Find the probability of selecting a dime, then another dime.

• 17/200

• 1/25

• 51/260

• 102/521