1.

Two friends were born in 1984 .The ptobability that they have same birth date is.a. 1/365b. 1/366c. 2/365d. 3/365

Answer»

Two friends have any one of the 366 days on the year 1984 as her birthday. [Year 1984 is a leap year]

Total number of outcomes in which two friends may have their birthday = 366 x 366

Two friends may have same birthday on any one of the 366 Days Of The Year 1984.

Number of favourable outcomes in which Two friends will have same birthday = 366

Probability = Number of favourable outcomes/Total number of outcomes.

Probability that both have same birthday = 366/(366 x 366) = 1/366.

Hence,the  probability  that they both have the same birthday = 1/366.



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