EASY
11th West Bengal Board
IMPORTANT
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How many words can be formed from the letters of the word 'DAUGHTER'  so that the vowels always come together?

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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 31
How many words can be formed from the letters of the word 'LAUGHTER' so that the vowels are never together?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 32
In how many ways can the letters of the word 'MACHINE' be arranged so that the vowels may occupy only odd positions?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 33
In how many ways can the letters of the word 'PENCIL' be arranged so that N is always next to E?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 34
In how many ways can the letters of the word 'APPLE' be arranged? 
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 35
How many words can be formed by using all the letters of the word 'ALLAHABAD'?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 36
How many words can be formed using the letter A thrice, the letter B twice and the letter C once?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 37
In how many ways can 10 books be arranged in a shelf so that a particular pair of books shall be always together?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 30 - Permutations and Combinations>EXERCISE 1>Q 38
In how many ways can 10 books be arranged in a shelf so that a particular pair of books shall be never together?