Question

There was a question in which there was a number 23562and we were asked to check the divisibility of this number by 9
So in solution they added the elements of this number 2+3+5+6+2=18
And said as the resultant sum is 18 so the number is divisible by 9
So my qquestionis that
1) what is this method called?
2) is it limited to multiples of 9 only?​

Answer 1

Answer:

Listen these are some methods by which we can quickly check whether it is divisible by that no. or not there are more divisibility rules you can also check them like with divisibility with 2 we check that whether the number is ending with even number if it is then it's divisible by 2 if it ends with an odd number then it's not divisible by 2

Step-by-step explanation:

For eg. 13372539790086 to check whether this no is divisible by 9 add all the numbers

1+3+3+7+2+5+3+9+7+9+0+0+8+6 = 63 which is a multiple of 9 so it is divisible by 9