20 people are there, they are shaking hands together, how many hand shakes possible,if they are in pair of cyclic sequence. Choose one:
A) 19
B) 20
C) 21
D) 22
E) 23
in case of cycle no of handshakes = no of persons   hence ans = 20   ANSWER:20
<result>B</result>
20 people are there, they are shaking hands together, how many hand shakes possible,if they are in pair of cyclic sequence.