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Everybody in a room shakes hands with everybody else. The tota
Question

Everybody in a room shakes hands with everybody else. The total number of handshakes is 153. The total number of persons in the room is

A
16

B
17

C
18

D
19

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Question Text
Everybody in a room shakes hands with everybody else. The total number of handshakes is 153. The total number of persons in the room is