At the end of the conference, all the 30 people present shake hands with each other once. How many handshakes will there be altogether?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 435.
When n people shake hands with each other, the number of handshakes = nC2
Number of people = 30
The total number of handshakes = 30C2 = (30 × 29) / 2 = 435