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Seven people come to a party and shake hands with each other. If each person shakes the hand of every other person, how many handshakes occur?
There will be 49 handshakes.

Sagot :

Answer:

49 handshakes

Step-by-step explanation:

By the Fundamental Counting Principle, if there are 7 ways to shake hands with each other and 7 ways to shake hands with every other person, then there are 7*7=49 ways to do both things, therefore 49 handshakes occur.

Answer:

21.

Step-by-step explanation:

I think its the number of combination of 2 form 7.

That is (7*6)/(2*1)

= 21.

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