Assume there are 365 days in a year 1 What is the probabilit

Assume there are 365 days in a year.

1. What is the probability that ten students in a class have different birthdays?

2. What is the probability that at least ten students in a class share their birthday?

Solution

1)

we have 365 days and 10 students so

Probablity = 10 / 365 = 0.0274

2)

at least 10 students s in a class share their birthday will be

Probablity = 1 - 0.0274= 0.9726 /365 = 0.00266