18 men shake hands with each other. Maximum no of handshakes without cyclic handshakes.
Options.
A) 190 B) 153 C) 210 D) 220 E) 230

Rationale: "1 st person will shake hand with 17 people 2 nd person will shake hand with 16 people 3 rd person will shake hand with 15 people . . . . . . total no . of handshakes = 17 + . . . + 3 + 2 + 1 = 17 * ( 17 + 1 ) / 2 = 153 or , if there are n persons then no . of shakehands = nc 2 = 18 c 2 = 153 answer : b"
Answer: B