RRB Group D 23-Oct-2018 Shift 3 Solved Paper

31 may 1985
= (1984 yrs + 1.1.1985-31.05.1985)
∵ odd days in 1600 yrs = 0
odd days in 300 yrs = 1
∴ Jan Feb March April May
31 28 31 30 31 = 151 days
= 21 week 4 odd days
∴ No of odd days = 4 +1 = 5 odd days
Given day is Friday.