Question

Can anyone solve this in ten seconds (92)2 and 21221/9 with formula

Answer 1

Yes I can solve in ten seconds but Only one.

$92 \div 2 = > 46$
There is number 2(means Divisor)
First we have to learn the divisibility.
Divisibility of two is The unit(tens place) digits is even.
Like in 9(2) {Unit digit is even. } So it is divisible.


Dear second one is not divisible by 9.

Thanks