Which of the following years is not a leap year?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 1900
An ordinary year is a leap year when it is divisible by 4. A century year (one ending in 00) is a leap year only when it is divisible by 400.
Option (1) 1900 — a century year; \(1900\div400=4.75\), not a whole number, so 1900 is not a leap year
Option (2) 2000 — a century year; \(2000=5\times400\), a leap year
Option (3) 1964 — \(1964=4\times491\), a leap year
Option (4) 2020 — \(2020=4\times505\), a leap year