st1ywil6freyPreynnle st1ywil6freyPreynnle

11-11-2016
Mathematics

Answered

can anyone help me wit this problem..

Twelve wrestlers compete in a competition. If each wrestler wrestles one match with each other wrestler, what is the total number of matches

Verified Answer :

alsteva alsteva

16-11-2016

Use formula for the number of combinations \(\\C_k^n= \frac{n!}{(n-k)!k!} \\ \ =12, k=2 \\ C_2^{12}= \frac{12!}{(12-2)!2!}= \frac{12!}{10!2!}= \frac{12\times11}{2\times1}=66\)

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