Question

Ankita and nagma are two friends. they were both born in 1990. what is the probability that they have [i] same bith date and [ii] different birth days

Answer 1

P(same birthday) =1/365 P(different birthdays)=(365-1)/365 = 364/365

Answer 2

(1)PE(same birth date)=1/365
(2)PE(diff birth date)=1-P(both have same birth date)
=1-1/365
=364/365