Question

19. When a positive integer 'x' is divided by 3
the remainder is 2. Find the remainder
when square of x is divided by 3.
(A) 0 B) 1 (C) 2 (D) none of these​

Answer 1

Dividened=(divisor)(quotient)+remainder

Let remainder be a

X=3a+2

X^2=(3a+2)^2

X^2=9a^2+24a+4

X^2=3(3a^2+6a)+4

According to the format anything be the quotient the remainder will always be 4