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I already know that the answer is 190 but why
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I already know that the answer is 190 but why

I already know that the answer is 190 but why-example-1
User Srikanth Holur
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7 votes

Answer:

You know that the total number of persons is 20 , so every person shakes hands with 19 persons.. It then mean that, there are 20×19=380 handshakes. But by every handshake two persons are involved. Therefore, 380 is the result of double-counting, which gives 190 handshakes.

Explanation:

Hope this helps

User Jonmarc
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