Probability Review Quiz

A number cube is rolled twice. What is the probability of getting a 6 on the first roll, then a number less than 5 on the second roll? 

• 2/3
• 5/36
• 1/9
• 1/36

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Kaylee has 1 red, 3 blue, 2 brown, 5 black, 1 purple, and 4 pairs of pink flip-flops in her closet. Assuming she always replaces them, what is the probability that she will choose a blue pair on Monday and a pink pair on Tuesday?

• 3/8

• 4/75

• 3/64

• 15/32

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

Lucy has the spinner pictured and spins it twice in a row. What is the probability that she lands on blue first and then on yellow or green?

• 1 / 16
• 1 ⁄ 6
• 1 ⁄ 8
• 3 ⁄ 4

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

CCSS.7.SP.C.8

How do you find compound probability?

• Multiply your probabilities
• Add your probabilities
• Divide your probabilities
• Subtract your probabilities

Tags

CCSS.7.SP.C.8

What is the probability of flipping a coin twice and landing on Tails both times?

• $\frac{1}{2}$

• $\frac{2}{2}$

• $\frac{4}{1}$

• $\frac{1}{4}$

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

A class has 10 girls and 15 boys. If two students are chosen at random, what is the probability that they are both girls?

• $\frac{10}{25}\times\frac{10}{25}$

• $\frac{10}{25}\times\frac{9}{25}$

• $\frac{10}{25}\times\frac{9}{24}$

• $\frac{9}{25}\times\frac{10}{24}$

Tags

CCSS.7.SP.C.5

CCSS.7.SP.C.7

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

An event with a probability of one

• experimental probability
• outcome
• certain event
• permutation

Tags

CCSS.7.SP.C.5

The probability of Asher's soccer team winning its next game is 7/10.  What is the probability of not winning their next game?

• unlikely
• 3/10
• 1/2
• impossible

Tags

CCSS.7.SP.C.5

A coin was flipped: 3 heads & 7 tails
What is the experimental probability:
P(tails)

• 30%
• 70%
• 50%
• 1/2

Tags

CCSS.7.SP.C.6