If 12 boys meet at a reunion and each boy shakes hands exactly once with each of the others, then ...

If 12 boys meet at a reunion and each boy shakes hands exactly once with each of the others, then what is the total number of handshakes

Quiz

Answer/Solution

66

Steps/Work

n(n-1)/2 =12*11/2
=66
ANSWER:D

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If boys meet at a reunion and each boy shakes hands exactly once with each of the others, then what is the total number of handshakes

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