Everybody in a function shakes hand with everybody else. The total | Filo
filo Logodropdown-logo

Class 11

Math

Algebra

Permutations and Combinations

view icon590
like icon150

Everybody in a function shakes hand with everybody else. The total number of handshakes are 45. Find the number of persons in the function.

Solution: Let there be people in the function.
We name the people as
Take person 1: He can shake hands with people.
Take person 2: He can shake hands with people.
......
Take person : He can shake hands with 1 people.
Adding them together:
There were 10 people in the party.
view icon590
like icon150
filo banner image

Connecting you to a tutor in 60 seconds.

Get answers to your doubts.

playstore logoplaystore logo
Similar Topics
determinants
complex number and quadratic equations
matrices
sequences and series
binomial theorem