At the end of a conference, the 12 people present all shake hands with each other once. How many handshakes will there be altogether?
- 66
- 76
- 86
- None of these
Explanation
Each handshake involves 2 people.
Formula for handshakes = n_(n-1) / 2
Where n = number of people
Here n = 12
Handshakes = 12 _ (12-1) / 2
Handshakes = 12 * 11 / 2
Handshakes = 132 / 2
Handshakes = 66
Last verified on 03-08-2026
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