EASY
11th West Bengal Board
IMPORTANT
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How many permutations can be formed by the letters of the word VOWELS, all vowels come together?

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Important Questions on Permutations and Combinations

EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 7
How many permutations can be formed by the letters of the word VOWELS, all consonants come together?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 8
In how many arrangements of the word GOLDEN will the vowels never occur together?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 9
In how many ways can 6 books on economics, 5 on history and 3 on Hindi be arranged on a shelf so that the books on each subject are always together?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 10
Find the number of ways in which 5 ladies and 5 gentlemen may be seated in a row so that no two ladies are together.
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 11
Find the number of ways in which m boys and n girls may be arranged in a row so that no two of the girls are together, it being given that m>n.
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 12
In how many ways can 5 children be arranged in a line such that two of them, Ram and Shyam, are always together?
EASY
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 12
In how many ways can 5 children be arranged in a line such that two of them, Ram and Shyam, are never together?
MEDIUM
11th West Bengal Board
IMPORTANT
WBCHSE Mathematics for Class 11>Chapter 7 - Permutations and Combinations>EXERCISE 5E>Q 13
When a group photograph is taken, all the seven teachers should be in the first row and all the twenty students should be in the second row. If the two corners of the second row are reserved for the two tallest students, interchangeable only between them, and if the middle seat of the front row is reserved for the principal, how many arrangements are possible?