Example 7 Evaluate n!/r!(n-r)! , when n = 5, r = 2. Example 7 Evaluate n!/r!(n-r)! R)-2 when n = 5 October 24, 2021 Category: Chapter 7 - Permutation and Combination , Maths , NCERT Exemplar Class 11 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related