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Everybody in a function shakes hand with everybody else. The t
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Everybody in a function shakes hand with everybody else. The total number of handshakes are 45. Find the number of persons in the function.

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Everybody in a function shakes hand with everybody else. The total number of handshakes are 45. Find the number of persons in the function.
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Text SolutionText solutionverified iconVerified

Let there be people in the function.
We name the people as
Take person 1: He can shake hands with people.
Take person 2: He can shake hands with people.
......
Take person : He can shake hands with 1 people.
Adding them together:
There were 10 people in the party.
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Question Text
Everybody in a function shakes hand with everybody else. The total number of handshakes are 45. Find the number of persons in the function.
Answer TypeText solution:1
Upvotes150