Ramu and shekar are friends .What is the probability that both will have different birth days in the year of 2016.
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first of all we have to ignore leap year.
Numbers of days in a year = 365
(A) Let A be the event that Rani and Shekhar have different birthdays.
But of Ramu can have a birthday on any day and hence Shekhar can have a birthday on (365-1)= 364 days
Now,
P(A) = n{A} / n{S}
= 365*364/365*365
= 364/365
So,
probability of Ramu and Shekhar having a different birthday = 364/365
Numbers of days in a year = 365
(A) Let A be the event that Rani and Shekhar have different birthdays.
But of Ramu can have a birthday on any day and hence Shekhar can have a birthday on (365-1)= 364 days
Now,
P(A) = n{A} / n{S}
= 365*364/365*365
= 364/365
So,
probability of Ramu and Shekhar having a different birthday = 364/365
mysticd:
(365*364)/(365*365)
365 upperside and 365 lowerside will be cut
so it will be 364/365
365 upper side and 365 lower side Will be cut
so it will be 364/365
now?
cancellation is ok, but why do we write the products
do u understand my doubt
yes
yes we can write
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