Probability Review

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? 

• 1/12
• 1/4
• 1/8
• 1/2

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.8

Two marbles are randomly drawn from a bag containing 3 purple, 1 blue, and 1 yellow marble. The first marble is blue and is not replaced. Find the probability of drawing a second marble that is purple. 

• 3/5
• 3/4
• 3/20
• 2/5

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Johnny did a survey and discovered that 5 out of 32 students walk to school. If 3 students are randomly selected from Johnny's school, without replacement, what is the probability that all 3 students walk to school?

• 3/7,440

• 1/4,960

• 15/8,192

• 1/496

Gregg has 12 cards. Half are black, and half are red. He picks two cards out of the deck. What is the probability that both cards are red? 

• 1/6
• 5/22
• 1/2
• 1/144

Tags

CCSS.HSS.CP.B.9

Jamie has 3 raffle tickets. One hundred tickets were sold. Her name was not drawn for the first prize. What is the probability that her name will be drawn for the second prize?

• 1/3
• 1/33
• 3/100
• 2/99

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

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

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Razz-Berri rolls two number cubes.  What is the probability that the sum of the two number cubes will be less than 5?
(Yes, I've actually had a student with this name)

• 1/4
• 1/12
• 1/9
• 1/6

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

You spin this spinner 3 times.
Find the probability of these 3 events.
P(red, odd, 3)

• 1/216
• 1/72
• 1/36
• 1/12

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

The spinner shown has eight congruent sections. The spinner is spun 120 times. What is a reasonable prediction for the number of times the spinner will land on an even number?

• 75

• 45

• 15

• 40

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.6

What is the probability of spinning red?

• 0
• 1/2
• 3/4
• 1

Tags

CCSS.7.SP.C.5