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Ex 7.2,1 - Chapter 7 Class 11 Permutations and Combinations
Last updated at Dec. 8, 2016 by Teachoo
Transcript
Ex 7.2, 1(Method 1) Evaluate Ex 7.2, 1 (i) 8! = 1 2 3 4 5 6 7 8 = 40320 (ii) 4! 3! 4! 3! = 1 2 3 4 3 2 1 = 24 6 = 18 Ex7.2, 1 (Method 2) Evaluate (ii) 4! 3! 4! 3! = 4 3! 3! = 3! (4 1) = 3! 3 = 3 2 1 3 = 18 Ex 7.2, 1 Evaluate 8! 8! = 1 2 3 4 5 6 7 8 = 40320
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