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Question

If 09/12/2001 happens to be Sunday, then 09/12/1971 would have been at

A
Wednesday
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B
Tuesday
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C
Saturday
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D
Thursday
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Solution

The correct option is D Thursday
09/12/2001 Sunday
No. of days between 9/12/1971 and 9/12/2001
As we know that every year has 1 odd days and a leap year has 2 odd days
Therefore,
No. of normal years =22
No. of leap years =8
Therefore,
Odd days =22+(2×8)=38=7×5whole weeks+3odd days
Hence there are 3 odd days in between 9/12/1971 and 9/12/2001.
Hence 9/12/1971 would have been Thurshday.

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