_ After every get-together every person present shakes the hand of every other person. If there were 105 handshakes in all, how many persons were present in the party?$?

_ After every get-together every person present shakes the hand of eve

1.	_ After every get-together every person present shakes the hand of every other person. If there were 105 handshakes in all, how many persons were present in the party?$?
A.	16
B.	15
C.	13
D.	14
Answer» C. 13

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_ After every get-together every person present shakes the hand of every other person. If there were 105 handshakes in all, how many persons were present in the party?$?

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