WorksheetsCounting, Permutations & Combinations
Total questions: 20
Worksheet time: 10mins
"The batting order for eight players on a 10 person team". Is this a permutation, combination, or neither?
Neither
Permutation
Combination
"The student body of 165 students wants to elect three representatives". Is this a permutation, combination, or neither?
Combination
Neither
Permutation
There are 10 students at a meeting. They each give a Graduation Day card to everyone else. How many cards were given?
10
1
90
3,628,800
In a primary election, there are four candidates for mayor, five candidates for city treasurer, and two candidates for county attorney. In how many ways may voters mark their ballots if they vote in all three of the races?
11
1
40
4
A multiple choice test consists of 15 questions, each permitting a choice of 5 options. In how many ways may a student fill in the answers if they answer each question?
75
759,375
30,517,578,125
15
Suppose a True-False test has 20 questions. In how many ways may a student mark the test, if 7 questions are marked correctly and 13 incorrectly?
390,700,800
1,048,576
140
77,520
Among the seven nominees for two vacancies on the city council are three men and four women. In how many ways may these vacancies be filled with any two of the nominees?
12
7
21
42
Use the fundamental counting principle to determine the number of ways a 4-digit pin number can be created if the first digit cannot be zero.
9000
40
39
90
In how many different ways can a committee of three people be selected from a total of eight?
56
336
24
512
An ice cream parlor has 15 different flavors. Michelle orders a sundae and has to select 3 flavors. How many different selections are possible?
2730
45
14,348,907
455
The manager of a 9 member baseball team must arrange the batting order. In how many ways can the manager of a baseball team arrange his players if there are no restrictions on the order?
81
362,880
18
387,420,489
A man has 8 pairs of pants, 12 shirts, 15 ties, and 6 sport coats. If he wears one of each, how many different outfits can he wear?
41
8640
2,430,480
101,270
There are 35 students on a football team. They must elect 3 students to serve as captains. How many different ways could the election turn out?
39,270
6545
105
42,875
From a box of 16 color crayons, you select 4 as your favorites. How many different ways can you make this selection?
64
43,680
1820
20
From a class with 20 students, I need to select a group of 9 students to perform a top-secret mission. How many different ways can this group be selected?
167,960
60,949,324,800
180
362,880
Suppose that there are 3 roads connecting Town A to Town B, 4 roads connecting Town B to Town C, and 2 roads connecting Town C to Town D. How many different ways are there to travel from Town A to Town D?
9
84
504
24
Suppose a club has 20 members. In how many different ways could the club choose a president, vice-president, and secretary?
6
60
1140
6840
Suppose there were 15 business people at a meeting. At the end of the meeting, each person at the meeting shook hands with every other person. How many handshakes were there?
105
210
225
120
Suppose that you have 12 books that are all different from each other. You've decided to let a friend borrow 3. How many different ways could your friend decide which books to borrow?
36
1728
1320
220
A baseball fan has a pair of tickets to 6 different home games of the San Diego Padres. If the fan has five friends who like baseball, how many ways may he take one along to each of the six games?
30
15,625
720
120
