NCHMCT JEE 2016 Question Paper with solutions for online practice

Question : 46 of 200

Marks: +1, -0

At the end of a business conference, all the ten people present shake hands with each other once. How many handshakes will there be altogether?

Solution:

In a group of n people, maximum number of handshakes
=

{n(n-1)}/2

Here, n = 10
Number of handshakes =

{10×(10-1)}/2

= 45

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