EASY
11th West Bengal Board
IMPORTANT
Earn 100

In how many ways can 4 different books be arranged in a shelf?

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Important Questions on Permutations and Combinations

EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 18
Ten students are participating in a race. In how many different ways can the first prize be won?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 19
Three different rings are to be worn in 4 fingers. In how many ways can this be done?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 20
There are 6 periods on each working day of a school. In how many ways can one arrange 5 subjects such that each subject is allowed at least one period?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 21
How many words with or without meaning can be formed by using all the letters of the word, 'DELHI', using each letter exactly once?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 22
It is required to seat 5 men and 4 women in a row so that the women occupy the even places. How many such arrangements are possible?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 23
How many 3-digit numbers are there?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 24
How many 3-digit numbers are there with no digit repeated?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 25
How many 4-digit numbers can be formed with no digit repeated by using the digits 3,4,5,6,7,8 and 0?