MEDIUM
11th ICSE
IMPORTANT
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In how many ways can 8 books be arranged on a shelf if 3 particular books must always stand together.

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Important Questions on Permutations and Combinations

MEDIUM
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 20
In how many ways can 8 books be arranged on a shelf if two particular books must occupy the ends?
MEDIUM
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 21
Four different mathematics books, six different physics books, and two different chemistry books are to be arranged on a shelf. How many different arrangements are possible if the books in each particular subject must all stand together.
EASY
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 21
Four different mathematics books, six different physics books, and two different chemistry books are to be arranged on a shelf. How many different arrangements are possible if the mathematics books must stand together?
EASY
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 22
In how many ways can 5 children be arranged in a line such that two particular children of them are always together?
MEDIUM
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 22
In how many ways can 5 children be arranged in a line such that two particular children of them are never together?
MEDIUM
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 23
How many numbers of six digits can be formed from the digits 0, 1, 3, 5, 7 and 9 when no digit is repeated? How many of them are divisible by 10 ?
EASY
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 24
In how many ways can 4 boys and 3 girls be seated in a row so that no two girls sit together?
EASY
11th ICSE
IMPORTANT
Understanding ISC Mathematics Class 11 Volume 1>Chapter 8 - Permutations and Combinations>EXERCISE 8.3>Q 24
Find the number of ways in which 5 boys and 5 girls may be seated in a row so that no two boys are together.