Question

Find the remainder ??
$\frac{ {(640640640643)}^{2} }{8}$

Answer 1

hey there !!!


640640640643)^2=(640640640640+3)^2
= 640640640640^2 + 2*640640640640*3 + 3^2

640640640640^2 + 2*640640640640*3 is divisible by 8
Hence remainder = remainder of (3^2)/8

Remainder = 1

hope it helps !!
☺☺ himanshu Jha