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An odd day is one which has both its day and month odd. How many odd days are there in the year?

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An odd day is one which has both its day and month odd for instance 13:5:2000. How many odd days are there in the year?

posted Dec 6, 2017 by anonymous

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1 Answer

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Odd months:
January => 31 days => (31-1)/2 + 1 = 16 odd days
March => 31 days => (31-1)/2 + 1 = 16 odd days
May => 31 days => (31-1)/2 + 1 = 16 odd days
July => 31 days => (31-1)/2 + 1 = 16 odd days
September => 30 days => (30)/2 = 15 odd days
November => 30 days => (30)/2 = 15 odd days
16×4 + 15×2 = 64 + 30 = 94 odd days.

answer Dec 6, 2017 by Tejas Naik
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