Probability and Counting Principles Quiz

Test your knowledge with these probability and counting principles questions covering dice, cards, balls, sandwiches, and more!

#1

If you roll a fair six-sided die, what is the probability of rolling a prime number?

1/6
1/2
2/3
1/3
1 answered
#2

In a group of 10 people, how many ways can you choose a president and a vice president?

10
90
100
45
1 answered
#3

In a group of 6 students, how many different committees of 3 can be formed?

15
20
30
60
1 answered
#4

If you roll two fair six-sided dice, what is the probability that the sum of the numbers rolled is 7?

1/12
1/6
1/8
1/9
1 answered
#5

In a class of 25 students, how many different pairs of students can be formed for a dance competition?

300
600
625
650
1 answered
#6

You have 5 different types of sandwiches and want to choose 2 to pack for lunch. In how many ways can you choose your lunch?

5
10
15
20
1 answered
#7

If you flip a fair coin three times, what is the probability of getting exactly two heads?

1/8
3/8
1/4
1/2
1 answered
#8

A bag contains 4 red balls, 3 blue balls, and 5 green balls. If a ball is randomly chosen from the bag, what is the probability of choosing a blue ball?

1/4
3/12
3/8
3/11
1 answered
#9

If you draw two cards from a standard deck of 52 cards without replacement, what is the probability that both cards are hearts?

1/13
1/17
1/26
1/169
1 answered
#10

A jar contains 5 red balls, 3 blue balls, and 2 green balls. If you randomly draw two balls without replacement, what is the probability of drawing one red ball and one blue ball?

5/20
15/90
10/20
15/40
#11

You have 4 different pairs of shoes. In how many ways can you choose 2 shoes to wear if each shoe must be from a different pair?

12
16
24
32
#12

A box contains 5 red balls, 4 blue balls, and 3 green balls. If you draw one ball at random, what is the probability that it is not green?

3/12
9/12
1/3
2/3
#13

In a standard deck of 52 cards, how many ways can you draw two cards of the same suit?

156
12
104
24
#14

You have 8 different books and want to arrange them on a shelf. In how many ways can you arrange them if two particular books must always be together?

5040
40320
2880
1440
#15

A committee of 5 people is to be chosen from a group of 10 men and 8 women. If the committee must consist of 3 men and 2 women, how many different committees are possible?

1440
3360
420
1260
#16

You have 8 different colored socks in a drawer. In how many ways can you choose 2 socks to wear if you want to wear one sock of each color?

8
16
28
56
#17

If you randomly pick a day of the week and a month of the year, what is the probability that the day is Friday and the month is December?

1/7
1/84
1/12
1/24
#18

A bag contains 6 red balls, 4 blue balls, and 2 green balls. If you draw three balls at random without replacement, what is the probability of getting at least one blue ball?

1/11
7/11
9/11
10/11
#19

A committee of 4 people is to be chosen from a group of 7 men and 5 women. If the committee must consist of 2 men and 2 women, how many different committees are possible?

210
420
630
840
#20

A bag contains 7 red balls and 5 blue balls. If you draw two balls at random without replacement, what is the probability that both balls are blue?

1/24
5/24
5/11
25/144

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