Which of these years was NOT a leap year?
A) 2000 a.d.
B) 1600 a.d.
C) 1988 a.d.
D) 1800 a.d.

Question

Quizplus · Accepted Answer

A year is a leap year if it is divisible by 4, except for years that are divisible by 100 but not by 400. 
2000 a.d. and 1600 a.d. were leap years because they are divisible by 400. 1988 a.d. was a leap year because it is divisible by 4 but not by 100. However, 1800 a.d. was not a leap year because it is divisible by 100 but not by 400.

Which of These Years Was NOT a Leap Year