# Probability Practice Quiz

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Probability is one of the exciting topics in Maths. This practice quiz on probability will gauge your understanding of the topic. The quiz contains diverse questions ranging from easy, medium, to challenging levels that will provide valuable feedback and add to your existing sphere of knowledge about the topic. Probability is one of the easy topics. Share the quiz with your friends and family if you find it helpful. All the best!

• 1.

### From a standard deck of cards, find the probability of picking a queen or an even number.

• A.

4/13

• B.

6/13

• C.

6/169

• D.

5/13

B. 6/13
Explanation
4/52 + 20/52 = 24/52 which reduces to 6/13
number of queens = 4, number of even (2, 4, 6, 8, 10 remember there are four 2's, 4's, 6's,8's and 10's) = 20

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• 2.

### There are 6 red, 5 blue, 3 green and 1 yellow marbles in a jar.  Jada picks a marble without looking.  What is the probability Jada picks a red or yellow marble?

• A.

7/15

• B.

2/75

• C.

7/30

• D.

1/35

A. 7/15
Explanation
red + yellow = 6 + 1 = 7 out of 15 6/15 + 1/15 = 7/15

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• 3.

### Scott rolls a six sided number cube (a dice).  What is the probability that the number rolled is an even or a 5?

• A.

1/2

• B.

1/3

• C.

2/3

• D.

1/12

C. 2/3
Explanation
even (2, 4, 6) plus 5 = 4 possibilities out of 6

3/6 + 1/6 = 4/6 = 2/3 reduced

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• 4.

### A teacher has 9 red crayons, 4 blue crayons, 7 purple crayons, and 5 black crayons in abasket. A student reaches into the basket and randomly selects a crayon. What is theprobability that the crayon will be either blue or black?

• A.

4/16

• B.

13/25

• C.

9/25

• D.

9/16

C. 9/25
Explanation
blue + black = 9 out of 25
4/25 + 5/25 = 9/25

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• 5.

### A teacher has 9 red crayons, 4 blue crayons, 7 purple crayons, and 5 black crayons in abasket. A student reaches into the basket and randomly selects a crayon. What is theprobability that the crayon will be either red or purple?

• A.

9/16

• B.

16/25

• C.

7/25

• D.

7/16

B. 16/25
Explanation
red + purple = 9 + 7 = 16 out of 25
9/25 + 7/25 = 16/25

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• 6.

### From a standard deck of cards, find the probability of picking a heart or spade.

• A.

1/16

• B.

1

• C.

1/4

• D.

1/2

D. 1/2
Explanation
heart + spade = 13 + 13 = 26 out of 52
13/52 + 13/52 = 26/52 which reduces to 1/2

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• 7.

### Jalen rolls a six sided number cube (a dice).  What is the probability that the number rolled is a 2 or a number greater than 3?

• A.

2/3

• B.

1/2

• C.

5/6

• D.

1/9

A. 2/3
Explanation
1/6 +3/6= 4/6 = 2/3 reduced
possible outcomes: 2, 4, 5, 6 (that is four)
total outcomes: 1, 2, 3,4 ,5 ,6 (that is six)
possible/total = 4/6 = 2/3

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• 8.

### There are 10 red, 5 blue, 3 green and 2 yellow marbles in a jar.  Mark picks a marble without looking.  What is the probability Mark picks a green or yellow marble?

• A.

3/10

• B.

1/4

• C.

3/5

• D.

1/3

B. 1/4
Explanation
green marbles + yellow marbles = 5 total marbles = 20 5/20 = 1/4

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• 9.

### Tre has 5 t-shirts, 4 dress shirts and 3 polo shirts in his closet.  If he reaches in without looking what is the probability he will pick a t-shirt or a polo shirt?

• A.

8/12 , 2/3

• B.

4/6, 12/3

• C.

7/15, 12/8

• D.

4/6, 12/10

A. 8/12 , 2/3
Explanation
There are a total of 5 t-shirts, 4 dress shirts, and 3 polo shirts in Tre's closet. The probability of picking a t-shirt or a polo shirt can be calculated by adding the number of t-shirts and polo shirts and dividing it by the total number of shirts. Therefore, the probability is 8/12, which simplifies to 2/3.

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• 10.

### There are 5 basketballs, 4 soccer balls and 6 footballs in a ball bin.  If a student chooses a ball at random from the bin, what is the probability the student will pick a football or a basketball?

• A.

11/15

• B.

3/4

• C.

4/9

• D.

13/7

A. 11/15
Explanation
The probability of picking a football or a basketball can be calculated by adding the number of footballs and basketballs and dividing it by the total number of balls in the bin. In this case, there are 5 basketballs and 6 footballs, so the total number of footballs and basketballs is 5 + 6 = 11. The total number of balls in the bin is 5 + 4 + 6 = 15. Therefore, the probability is 11/15.

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• Current Version
• Aug 22, 2023
Quiz Edited by
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• Oct 02, 2011
Quiz Created by
Bheaton1

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