It was Sunday on Jan. 1,2006.What was the day of the week on Jan 1,2010 ?  Choose the most appropriate option.
A) Sunday B) Saturday C) Friday D) Wednesday E) None of these
Solution   On 31st December,2005 it was Saturday.   Number of odd days from the year 2006 to the year 2009   =(1 + 1 + 2 + 1)= 
<gadget id="calculator">(1 + 1 + 2 + 1)</gadget>
<output>5</output>
5 days   On 31st December 2009,it was Thursday.   Thus,on 1st Jan,2010 it is Friday. Answer Friday
<result>C</result>
It was Sunday on Jan. 1,2006.What was the day of the week on Jan 1,2010 ?