, Avg: 00:37 , 61%✓ SSC CGL 20201)What day of the week was 29 June 2010 ?
Tuesday
Odd day till 2009 = 7 + 2 + 2 = 11;
( Year 2004 and 2008 are leap year and odd days till 2000 = 0);
Odd days in 29 June = Odd days in (January + February + March + April + May + June) = 3 + 0 + 3 + 2 + 3 + 1 = 12;
Total odd days = 11 + 12 = 23;
Odd days = 23/7 = 2 remaining;
The days of the week was Tuesday.
, Avg: 00:36 , 66%✓ SSC CGL 20202)What day of the week was 5 February 2008?
Tuesday
Odd days in year 2007 = 6 + 2 = 8;
( 2004 is the leap year and odd days till 2000 is 0.)
Odd days in 5 February = odd days in January + 5 = 3 + 5 = 8;
Total odd days = 8 + 8 = 16;
Odd days = 16 = 2 weeks + 2 odd days;
So day of the week was Tuesday.
, Avg: 00:24 , 66%✓ SSC CGL 20203)What day of the week was 31 January 2007?
Wednesday
Number of odd days in 2006 = 7;
( number of Leap year from 2000 to 2007 = 1(2004));
Odd days in 31 January = 31;
Total odd days = (31 + 7) = 38;
Odd day = 38/7 = 3 remaining;
The day of the week was Wednesday.