At a place 11 Friends met together and they shook their hands. how many hand-shakings did they do?

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asked Feb 25, 2021 153k views

2 votes

At a place 11 Friends met together and they shook their hands. how many hand-shakings did they do?

Mathematics
high-school

Aarosil asked

by Aarosil

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2 Answers

5 votes

Answer:

121

Explanation:

Because every one of them shook with each other and one person shook 11 times so 11 into 11 is 121.

Fabian Frank answered Feb 26, 2021

by Fabian Frank

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3 votes

Answer:

55 handshakes.

Explanation:

n(n-1)

----------

= 11(11-1) / 2

= 11* 10 / 2

= 110 / 2

= 55

Sandeep Singh Rawat answered Mar 3, 2021

by Sandeep Singh Rawat

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