Question

Let N = 1421 x 1423 x 1425. What is the remainder when N is divided by 12?

• A. 0
• B. 9
• C. 3
• D. 6

Answer 1

The correct option is C 3

$Rem\left[\frac{1421\times 1423\times 1425}{12}\right]$

$\Rightarrow Rem\frac{[5\times 7\times 9]}{12}=Rem\frac{[35\times 9]}{12}$

$Rem\frac{[11\times 9]}{12}=Rem\frac{\left[99\right]}{12}=3$