Question

$n$ is a whole number which when divided by $4$ gives $3$ as remainder. What will be the remainder when $2n$ is divided by $4$ ?

• A. $7$
  
• B. $5$
• C. $4$
• D. $2$

Answer 1

The correct option is D $2$

We know that,

$Dividend=(Divisor\times Quotient)+Remainder$

Let $n=4q+3$. Then $2n=8q+6$ $=4(2q+1)+2$.
Thus, when 2n is divided by 4, the remainder is 2.