Prove that any date in March of a year is the same day of the week corresponding date in November that year.

Answer: Option A

We will show that the number of odd days between last day of February and last day of October is zero.
March   April   May   June   July   Aug.   Sept.   Oct.
31 + 30 + 31 + 30 + 31 + 31 + 30 + 31
= 241 days
= 35 weeks
= 0 odd day
Number of odd days during this period = 0.
Thus, 1^st March of an year will be the same day as 1^st November of that year. Hence, the result follows