Handshakes

Question:

At a celebration, k students shake 3160 handshakes in total. How many people were at the party?

.

.

C

A

P

T

A

I

N

I

N

T

E

R

V

I

E

W

.

.

Solution: 80 Students. You can solve it by using permutation and combination i.e. kC2 = 3160. k = 80

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