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From the following years,which is not a leap year ?

  • A.1996
  • B.1984
  • C.1863
  • D.2004

Answer: C

A year is a leap year if it is divisible by 4, except that a century year must also be divisible by 400.

\[ 1996 \div 4 = 499 \ \checkmark, \qquad 1984 \div 4 = 496 \ \checkmark, \qquad 2004 \div 4 = 501 \ \checkmark \]

\[ 1863 \div 4 = 465.75 \ \times \]

So 1863 is not a leap year. None of these is a century year, so the 400-rule never comes into play.

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