January 12, 1980 was Saturday, what day was January 12, 1979: (A) Saturday (B) Friday (C) Sunday (D) Thursday
Answer: B
Explanation:
1 ordinary year = 365 days = (52 weeks + 1 day)
Hence number of odd days in 1 ordinary year = 1.
1 leap year = 366 days = (52 weeks + 2 days)
Hence number of odd days in 1 leap year= 2.
The year 1979 is an ordinary year, it has 1 odd day. So, the day on 12th January
1980 is one day beyond the day on 12 th January, 1979. Here, January 12, 1980 was Saturday. So January 12, 1979 was Friday.