What day of the week was 31st July, 1993?	Choose the correct choice from the following choices.
A) Monday B) Sunday C) Saturday D) Tuesday E) Friday
SOLUTION :   31st July, 1993 = (1992 years + period from 1st January, 1993 to 31st July, 1993)   1600 years have 0 odd days and 300 years have 1 odd day.   Now, the period from 1900 to 1992 have 69 ordinary years and 23 leap years   = (69*1 + 23*2)= 
<gadget id="calculator">(69*1 + 23*2)</gadget>
<output>115</output>
115 odd days= (16 weeks + 3 days) = 3 odd days.   January	February	March	April	May	June	July   31 28 31 30 31 30 31   = 212 days = (30 weeks + 2 days) = 2 odd days   Therefore, total number of odd days = 1 + 3 + 2= 
<gadget id="calculator">1 + 3 + 2</gadget>
<output>6</output>
6 odd days.   Therefore, the required day was Saturday.   ANSWER IS Saturday
<result>C</result>
What day of the week was 31st July, 1993?