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There will be 45 handshakes (assuming that each person doesn't repeat who they shake hands with).

Use the following formula for this one (n*(n-1))/2 where n is number of people...so if 10 people its (10 x 9) / 2 = 45 handshakes, if 7 people its (7 x 6) / 2 = 21 handshakes etc.

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โˆ™ 2017-04-03 19:18:38
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Q: How many handshakes will there be altogether at the end of a business conference if the ten people present all shake hands with each other once?
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