Determine whether squares of the following numbers are even or odd. (I)213         (ii)  3824    (iii)    9777         (iv)  40028

Explanation

(i)`213`
`3times3=9`, it is odd.

(ii)`3824`
`4times4=16`, it is even.

(iii)`9777`
`7times7=49`, it is odd.

(iv)`40028`
`8times8=64`, it is even.

Hence, squares of `213` and `9777` is odd whereas squares of `3824` and `40028` is even.