ten people meet for the first time at a party.if they will shake hands once at each other,how many handshakes will be made?
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ten people meet for the first time at a party.if they will shake hands once at each other,how many handshakes will be made?
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Answer:
45 handshakes
Explanation:
Formula: n(n+1)/2
where n is the no. of shake hands by very first person and that is 9.
So, the total no. of hand shakes=9(9+1)/2
= 9(10)/2
=90/2
=45 handshakes