Calendar - General Aptitude

Q1:

On what dates of April, 2001 did Wednesday fall?

A 1st, 8th, 15th, 22nd, 29th

B 2nd, 9th, 16th, 23rd, 30th

C 3rd, 10th, 17th, 24th

D 4th, 11th, 18th, 25th

ANS:D - 4th, 11th, 18th, 25th

We shall find the day on 1st April, 2001. 1st April, 2001 = (2000 years + Period from 1.1.2001 to 1.4.2001) Odd days in 1600 years = 0 Odd days in 400 years = 0 Jan. Feb. March April
(31 + 28 + 31 + 1)     = 91 days  0 odd days. Total number of odd days = (0 + 0 + 0) = 0 On 1st April, 2001 it was Sunday. In April, 2001 Wednesday falls on 4th, 11th, 18th and 25th.