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

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Chapter 7 - Permutations and Combinations Ex. 7.1

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Chapter 7 - Permutations and Combinations Ex. 7.2

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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!

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Chapter 7 - Permutations and Combinations Ex. 7.3

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Chapter 7 - Permutations and Combinations Ex. 7.4

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Chapter 7 - Permutations and Combinations Misc. Ex.

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