EASY
12th Andhra Pradesh Board
IMPORTANT
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Find the number of palindromes with 6 digits that can be formed using the digits 0,2,4,6,8.

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Important Questions on Permutations and Combinations

EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of palindromes with 6 digits that can be formed using the digits 1,3,5,7,9
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of 4 -digit telephone numbers that can be formed using the digits 1,2,3,4,5,6 with at least one digit repeated.
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of bijections from a set A containing 7 elements onto itself.
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of ways of arranging 'r' things in a line using the given n different things in which at least one thing is repeated.
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of 5 letter words that can be formed using the letters of the word NATURE that begin with N when repetition is allowed.
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of 5-digit numbers divisible by 5 that can be formed using the digits 0,1,2,3,4,5 when repetition is allowed.
EASY
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q II
Find the number of numbers less than 2000 that can be formed using the digits 1,2,3,4 if repetition is allowed.
MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Intermediate Second Year Mathematics Paper 2A>Chapter 5 - Permutations and Combinations>Exercise 5(b)>Q III
9 different letters of an alphabet are given. Find the number of 4 letter words that can be formed using these 9 letters which have, no letter is repeated.