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?

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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?

+1 vote

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.**

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