If Today Is Tuesday, what was the day before 51 days

If today is tuesday,what was the date before 51 days ago ?
Sunday

How do we solve it ?

A week has 7 days " Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday ".

51 / 7 = 7 ( Remainder = 2)

So you can say that before multiples of 7 days, the day will repeat itself as tuesday.

Hence before 49 days Tuesday would occur again.

So we calculate before the remainder (2) , the answer is Sunday.

Simple Logic = And whatever the remainder obtained is, deduct that to the day.

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