The last day of a century cannot be

1.	The last day of a century cannot be
Answer» 100 years contain 5 odd days. Last day of 1st century is Friday. 200 years contain (5 x 2) 3 odd days. Last day of 2nd century is Wednesday. 300 years contain (5 x 3) = 15 1 odd day. Last day of 3rd century is Monday. 400 years contain 0 odd day. Last day of 4th century is Sunday. This cycle is repeated. Last day of a century cannot be Tuesday or Thursday or Saturday.

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