Question

6 people meet for a business lunch. Each person shakes hands once with each other person present. How many handshakes take place?
A. 30
B. 21
C. 18
D. 15
E. 10

Answer 1

We are given with 6 people meeting at a lunch and each has to shake hand to the other people in the meeting. In this case, one person has to shake hands with 5 other persons. Since there are 6 people in total, there are 6 * 5 or 30 handshakes that took place in the business lunch.