The number of ways in which n different thingscan be distributed into r different groups is
1,297 views · Published 13 October 2018 · 5:41 · Indexed 28 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The number of ways in which n different thingscan be distributed into r different groups is `r^(n__r) C_1 (r-1)^n +^rC_2(r-2)^n-....+(-1)^(r-1) * rC_(r-1) or sum_(p=0)^r (-1)^p * rC_p *(r-p)^n`
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