jdonaldson2199 jdonaldson2199

17-01-2018
Mathematics

contestada

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

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magicistotesrea magicistotesrea

20-01-2018

780 handshakes.
(n(n-1))/2
(40(40-1))/2
(40*39)/2
1560/2
780

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