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September 24, 2017, 05:35:09 PM
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: Count the Firday, the 13th!  ( 2238 )
« : November 28, 2007, 05:16:34 PM From Ria»



Count the Firday, the 13th!


Many people would think Friday the 13th will be an unlucky day. Is it possible that there is no Friday on 13th through the whole year?
How many Fridays at 13th can we have in a year at most? Can you calculate it out?

 
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« #1 : December 04, 2007, 07:50:07 PM From Rahul»

365/91 = 4(approx)

we could get atmost 4 friday comes on 13th of month


we must hav 1 13th that fall on friday
91/7==13
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