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On 8th Feb, 2005 it was Tuesday. What was the day of the week on 8th Feb, 2004?

  • A.Tuesday
  • B.Monday
  • C.Sunday
  • D.Wednesday

Answer: C

The year being crossed here contains a 29 February, so the shift is two days rather than one.

From 8 February 2004 to 8 February 2005 the span includes 29 February 2004, making it 366 days:

\[ 366 \equiv 2 \pmod 7 \]

Stepping back from the given Tuesday:

\[ \text{Tuesday} - 2 = \textbf{Sunday} \]

Subtracting only one day, the reflex from ordinary years, gives Monday - the trap this question is built around.

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