Every two person shakes hands with each other in a party and the total number of hand shakes is 66. the number of guest in a party is ?
a) 11
b) 12
c) 13/
d) 14
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Guest 1 shakes hands with the remaining n - 1 guests… ... each other in a party and the total number of handshakes is 66 . ... There fore there are 12 guests in the party.
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As far as handshakes go, for n guests there are (n - 1) + (n - 2) + (n - 3) + .... + 3 ... More
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