Math, asked by shrinivashugar247, 5 months ago

Rajan and Sajan are two friends. Find the probability that both have birthday on the same day of an ordinary year.

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Answered by Rohit57RA

1/2 probability is possible......

shrinivashugar247: explain

Rohit57RA: Ok

Rohit57RA: just imagine.

Rohit57RA: in one year only 1 birthday happen but in one day the birthday of 1 person celebrated.

Rohit57RA: then how the the birthday of both friends can be celebrated in the same day.

Rohit57RA: so, there is half of the chance happen that both person have birthday in an ordinary day.

Answered by ShaneSangtani

We need that both of them should have their birthday on the same day. We have to choose that one day and this can be done in 365C1=365ways. There is only 1 way in which each of them can have a birthday on that selected day.

So number of favourable events=365

Required probability= 3653652

= 1365

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Rajan and Sajan are two friends. Find the probability that both have birthday on the same day of an ordinary year.