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The calendar for the year 2013 was the same as the year :

  • A.1998
  • B.2017
  • C.2009
  • D.2002

Answer: D

Count the odd days backwards from 2013 until they total a multiple of seven.

\[ 2012:2,\ 2011:1,\ 2010:1,\ 2009:1,\ 2008:2,\ 2007:1,\ 2006:1,\ 2005:1,\ 2004:2,\ 2003:1,\ 2002:1 \]

\[ \text{total} = 14 \quad\Longrightarrow\quad 0 \text{ odd days} \]

So 2013 repeats the calendar of 2002.

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