Home
Class 11
MATHS
Everybody in a room shakes hands with ev...

Everybody in a room shakes hands with everybody else. The total number of shake hands is 66. The number of persons in the room is …………….. .

A

11

B

12

C

10

D

6

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A hot body is placed in a closed room maintained at a lower temperature. Is the number of photons in the room increasing?

There are n married couples at a party. Each person shakes hand with every person other than her or his spouse. Find the total m of hand shakes.

If there are 12 persons in a party and each of them shake hands with all others, what is the total number of handshakes?

There are 15 persons in a party and if each 2 of then shakes hands with each other , how many handshakes happen in the party ?

There are 10 bulbs in a room. Each one of them can be operated independently . Find the number of ways in which the room can be illuminated .