when we move down in yearwise a day decreases. but when a leap year comes 2 days gets decreased..for e.g. 12 jan 2008 --- saturday 12 jan 2007 --- friday 12 jan 2006 --- thursday 12 jan 2005 --- wednesday 12 jan 2004 --- monday.. so in 4 years five days gets reduced... so in this manner we can find out in which year wat day was on 12 jan.. ANSWER ----- it was friday on 12 jan 1979......
jan 12,1979- lets determine the no. of odd days upto year 1978-(1600+300+78)1600 is divisible by 400,therefore the no.of odd days is 0...300 yrs has 1 odd day78yrs consist of (19 leap + 59 ordi...