Question

Riya and Kajal are friends. Probability that both will have the same birthday is :
a)364/365
b)31/365
c)1/365
d)1/133225​

Answer 1

Answer

Option C - 1/365

Explanation

As a year which is not leap year have 365 days

So the probability is 1/365

Answer 2

Given : Riya and Kajal are friends.

To Find : Probability that both will have the same birthday  

a)364/365

b)31/365

c)1/365

d)1/133225​

Solution:

There are 365 days in a year

Riya can have birthday on any day of Year

Hence  (365/365)  

Kajal has to have birthday on specific day only on which riya has birthdays

Hence  (1/365)

Probability that both will have the same birthday   = (365/365) (1/365)

= 1/365

Hence correct option is   option c)  1/365

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