Aspire Faculty ID #16598 · Topic: NIMCET 2008 · Just now
NIMCET 2008

12 members were present at a board meeting. Each member shook hands with all of other members before and after the meeting. How many handshakes were there?

Solution

One round handshakes $=\binom{12}{2}=66$
Before + After $=2\times 66=132$

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