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Multi-Birth Convention (Posted on 2012-01-05) Difficulty: 3 of 5
At a convention of pairs of twins and sets of triplets, there were 9 sets of twins and 6 sets of triplets, each set being from a different family. Each twin shook hands with all the twins except his or her sibling and with half the triplets. Each triplet shook hands with all the other triplets except his or her siblings and with half the twins.

How many handshakes took place all together?

See The Solution Submitted by Charlie    
Rating: 4.0000 (2 votes)

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  Subject Author Date
SolutionI think this works.Jer2012-01-05 12:30:13
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