NCERT Solutions for Class 11-science Maths Chapter 7 - Permutations and Combinations

Chapter 7 - Permutations and Combinations Ex. 7.1

Solution 1
Solution 2
Solution 3
Solution 4
Solution 5
Solution 6

Chapter 7 - Permutations and Combinations Ex. 7.2

Solution 1
Solution 2

3! = 1 × 2 × 3 = 6

4! = 1 × 2 × 3 × 4 = 24

∴ 3! + 4! = 6 + 24 = 30

7! = 1 × 2 × 3 × 4 × 5 × 6 × 7 = 5040

∴ 3! + 4! ≠ 7!

Solution 3
Solution 4
Solution 5

Chapter 7 - Permutations and Combinations Ex. 7.3

Solution 1
Solution 2
Solution 3

Solution 4
Solution 5
Solution 6
Solution 7

Solution 8
Solution 9
Solution 10
Solution 11

Chapter 7 - Permutations and Combinations Ex. 7.4

Solution 1
Solution 3
Solution 2

Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9

Chapter 7 - Permutations and Combinations Misc. Ex.

Solution 1
Solution 2
Solution 3

Solution 4
Solution 5
Solution 6
Solution 7
Solution 8
Solution 9
Solution 10
Solution 11