Question 8604
We all know the rules till 10 or 11
but not 0f 12 13 and so on so we take 2 numbers till 10 whose sum is the number of which you are checking the divisibility.
Eg.of 14
9 + 5=14
you will check their divisibility if a number is divisible by both 9 and 5 it will be divisible by 14 too.
the same gose for 13, 15,16 17 and so on
Hope it is clear now.