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Permutations and Combinations · Exercise 1 of 5

Permutations and Combinations Easy Level

  • 40 questions
  • Page 3 of 4
  • Answers explained
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40 permutations and combinations questions at competitive-exam level: arranging letters with repeats, numbers from digits, circular seating and necklaces, committees, handshakes, diagonals, lines and triangles, and a street map – each solved one step per line with the common trap named.

Question 21 Easy

A committee of 2 men and 3 women is to be chosen from 5 men and 6 women. In how many ways can this be done?

A 462
B 30
C 200
D 120
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Question 22 Easy

A group of 4 is chosen from 6 men and 4 women. In how many ways can it have exactly 2 women?

A 90
B 210
C 36
D 45
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Question 23 Easy

A person has 5 shirts, 4 trousers and 3 ties. How many different outfits of one of each can be made?

A 12
B 20
C 60
D 35
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Question 24 Easy

There are 3 roads from A to B and 4 roads from B to C. In how many ways can one go from A to C and back to A without using any road twice?

A 144
B 72
C 12
D 24
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Question 25 Easy

In how many ways can 3 boys and 2 girls stand in a row if the two girls must be together?

A 24
B 120
C 12
D 48
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Question 26 Easy

In how many ways can 3 boys and 2 girls stand in a row if the girls are not next to each other?

A 48
B 72
C 96
D 60
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Question 27 Easy

How many even 4-digit numbers can be formed with the digits 1, 2, 3, 4, 5 without repetition?

A 120
B 60
C 24
D 48
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Question 28 Easy

How many 3-digit numbers have all three digits different?

A 720
B 504
C 648
D 900
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Question 29 Easy

From 5 vowels and 8 consonants, in how many ways can a set of 2 vowels and 3 consonants be selected?

A 560
B 67,200
C 1,287
D 280
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Question 30 Easy

In how many ways can 4 different prizes be given to 3 students if a student may win any number of prizes?

A 64
B 81
C 12
D 24
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