IPM Mega finals STD IV answers

In the year 2012, Mrs. Gokhale celebrated her 20th marraige anniversary on the 163rd day of the year. On which of the date did she marry?





Answer:
month             days            cummulative 

Jan                  31                      31
Feb                 29                      60
march             31                      91
april               30                     121
may                31                    152

Now 163 - 152 = 11 days
So, her anniverary date is 11th of June
So, she got married on 11th June 1992   (20 years back)