Ex 7.2, 2 - Is 3! + 4! = 7! - Chapter 7 Premutations - Ex 7.2

  1. Chapter 7 Class 11 Permutations and Combinations
  2. Serial order wise
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Ex 7.2, 2 Is 3! + 4! = 7!? L.H.S 3! + 4! = 3 × 2 × 1 + 4 × 3 × 2 × 1 = 6 + 24 = 30 Hence 3! + 4! ≠ 7!

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.