Sharing your own birthday
According to 2013 Census, there were 7.125 billion people in the world.
Now say that 0.125 billion peoples are born on a leap year.
Atleast how many persons are you sharing your birthday with in the whole world in 2013?
Take a normal year to have 365 days.
Details and Assumptions:
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The rest of 7 billion peoples are born in a normal year.
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You are not born on 29th February.
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The birth rate is uniformly distributed across all the 365 days in the year.
For other problems: Check your Calibre
The answer is 19178081.
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