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Kamila [148]
3 years ago
14

If 40 people shake hands with each person in the class, how many handshakes

Mathematics
1 answer:
AfilCa [17]3 years ago
3 0
780 handshakes.
(n(n-1))/2
(40(40-1))/2
(40*39)/2
1560/2
780
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Step-by-step explanation:

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Answer:

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