Question

u have a important exam on monday and ur own sister,s marriage is on sunday, so how will u manage.

Answer 1

If my sister's marriage is on Sunday and my exam is on Monday i would get prepared for my exam before two to three days and then attend my sister's marriage. I would not miss any any of the things. After the marriage occasion i would directly go  from there to exam if marriage is late.
                                                        or 
I would ask the details ,and then take my decission.
Hope this is useful.