Question

Explain pigeon hole principle. Using this principle show that in any
group of 36 people, we can always find 6 people who were born on the
same day of week.

Answer 1

pidgeon hole theory:
If n > m pigeons are put into m pigeonholes, there's a hole with more than one pigeon
7 days... 36 people
m = 7
n = 36
... there has to be 6 or more than 6 on one day of the week ( at least)

Answer 2

36/7 = 5+1 remainder
so split evenly, u have 6 days with 5 people sharing, and 1 day with 6 people