Question

Seeta and Geeta are friends. What is the probability that both will have 1)different birthdays,2)same birthday?(ignoring a leap year)

Answer 1

p(different birthday)=364/365

p(same birthday)=1/365

Answer 2

Given; Seeta and Geeta are friends

To Find; What is the probability that both will have 1)different birthdays, and 2) the same birthday? (ignoring a leap year)

Solution; Seeta and Geeta are friends

Total number of days in a year =365

Case if both have same birthday =1

The probability that has the same birthday = 1/365

Case if both have different birthdays =364

Probability of different birthdays =364/365

Hence the probabilities are 1/365 and 364/365 respectively