What was the day of the week on 12th January, 1979?
a)Friday
b)Sunday
c)Wednesday
d)Monday

• Answer is: a)Friday
  Explanation:
  First Split the given date:1978 + 12th january 1979
  1978=1600+300+78
  1600years has 0 odd days
  300years has 1 odd days
  In 78 years has a 19 leap years and 59 nonleap years.
  19*2=38
  59*1=59
  
  In january has 12 odd days
  so total odd days are=1+38+59+12=110
  110%7=5(remainder)
  so 5->Friday
• 12 years agoHelpfull: Yes(3) No(4)
• 1. 79
  2.79/4=19
  3.12
  4.0(for jan)
  5.79+19+12+0=110
  6.110/7=5(rem)
  so the ans will be friday
• 7 years agoHelpfull: Yes(1) No(0)