8 people at a party they all exchange handshakes how many handshakes are exchanged. if 50 people were at this party how many handshakes would there be. if there were a hundred people. if there were. n people

Question

Mathematics

Efrain Ibarra

7 July, 04:59

8 people at a party they all exchange handshakes how many handshakes are exchanged. if 50 people were at this party how many handshakes would there be. if there were a hundred people. if there were. n people

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Answers (2)

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Clare Walls · Answer 1

For 8 people this would be the number of combinations of from 8

= 8C2 = 8! / 6! 2!

A quick way to do this is (8*7) / (2*1) = 28 answer

For 50 people its (50*49) / 2 = 1225

100 - its 100*99 / 2 = 4950.

For n people its n! / (n - 2) ! 2!

Cinder · Answer 2

I think it would be 80 I I'm rong I try