What was the day on 14 April, 2000 ?

Correct Answer: FRIDAY

Explanation:

• Use 1 January 2000 as the reference: 1 January 2000 was a Saturday.

• Count days from 1 January 2000 up to 14 April 2000:

  January 31 + February 29 (leap year) + March 31 + first 13 days of April = 31 + 29 + 31 + 13 = 104 days.

  104 ≡ 6 (mod 7), so the weekday shifts by 6 days from Saturday.

• Saturday + 6 days = Friday, therefore 14 April 2000 was Friday.