Q. 63.8( 10 Votes )

It is given that in a group of 3 students, the probability of 2 students not having the same birthday is 0.992. What is the probability that the 2 students have the same birthday?

Answer :

Given,

Probability of 2 students not having same birthday = 0.992


Probability of 2 students having same birthday = 1 – Probability of 2 students not having same birthday.


P(2 students having same birthday) = 1 – P(2 students having same birthday)


P(2 students having same birthday) = 1 – 0.992


P(2 students having same birthday) = 0.008


Probability that the 2 students have the same birthday is 0.008


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