30. June 25, 1982, was a Friday. What day of the week was June 25, 1987? (Note: 1984 was a leap year.)
Lets calculate:
1982-1983 one day shift.
1983-1984 two days shift.(The extra day is in February)
1984-1985 one day shift.
1985-1986 one day shift
1986-1987 one day shift
So 1+2+1+1+1=6
If June 25, 1982, was a Friday then June 25, 1987, was a Thursday.
Hence, (d).