Question

Without making any actual division show that $2300023$ is divisible by $23$.​

Answer 1

We have to prove that $2300023$ is divisible by $23$ without doing actual division.

$2300023$ can be written as.
$2300023=2300000+23$
$=23(100000+1)$ [taking 23 common]
$=23\times 100001$

Hence. $2300023$ is divisible by $23$.