Math, asked by rajakamran830rk, 8 months ago

at the end of conference the ten people present all shake hand with each other once
how many handshakes will there be altogether

Answers

Answered by Anonymous

Step-by-step explanation:

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Answered by mhanifa

Answer:

Step-by-step explanation:

Person 1 with the rest 9

Person 2 with the rest 8, not counting person 1 as it is already counted above

...

Person 9 with person 10, not counting the rest 8 as counted in previous steps

total= 9+8+...1= 45 handshakes

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