# Answer to Question #2469 in Statistics and Probability for norman

Question #2469

What is the probability of two people having the same birthday?

Expert's answer

We should put some assumptions:

1)Assume that year has 365 days

2) The probability to be born at a given day is the same for all days.

Then it is equal to 1/365.

3) The events that these people are born are independent.

Then the probability is equal to

1/365 * 1/365 = 1/365

=1/33225 =0.0000300978179

1)Assume that year has 365 days

2) The probability to be born at a given day is the same for all days.

Then it is equal to 1/365.

3) The events that these people are born are independent.

Then the probability is equal to

1/365 * 1/365 = 1/365

^{2}==1/33225 =0.0000300978179

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