Answer Find the day on 1st October, 1994.
1600 years contain 0 odd day.
300 years contain 1 odd day.
93 years = (23 leap years + 70 ordinary years)
= (46 + 70) odd years = 116 odd days = 4 odd days.
Days from 1st Jan, 1994 to 1st Oct, 1994
Jan Feb March April May June July Aug Sept Oct
31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 1
= 274 days = 39 weeks + 1 days = 1 odd day.
:. Total number of odd days = (0 + 1 + 4 + 1) = 6.
:. 1st Oct, 1994 was 'Saturday'
:. Monday fell on 3rd October, 1994.
During October 1994, Monday fell on 3rd, 17th and 24 th.