Q. In a conference of 8 persons, if each person shake hand with the other one only, then the total number of shake hands shall be
A) 64
B) 56
C) 49
D) 28
Explanation
(d)
Total number of shake hands when each person shake hands with the other once only $= \ ^{8}C_{2} = 28$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.