Ex 6.2, 5 (ii) - Chapter 6 Class 11 Permutations and Combinations

Last updated at December 16, 2024 by

Ex 6.2, 5 - Evaluate n! / (n − r)! , when (ii) n = 9, r = 5 - Teachoo - Ex 6.2

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Ex 6.2, 5 Evaluate n!/(n − r)! , when (ii) n = 9, r = 5 𝑛!/(𝑛 − 𝑟)! Putting n = 9, & r = 5 = 9!/(9 − 5)! = 9!/4! = (9 × 8 × 7 × 6 × 5 × 4!)/4! = 9 × 8 × 7 × 6 × 5 = 15120

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo