The number 58129745812974 is divisible by


A) 11

B) 8

C) 4

D) None of these

Correct Answer:
A) 11

Description for Correct answer:

We know that, a number is divisible by 11 when the difference between the sum of its digit at even places and sum of digit at odd places is either 0 or the difference is divisible by 11.

So, number is 58129745812974

Sum of digits at odd places

=4+9+1+5+7+2+8=36

Sum of digit at even places

7+2+8+4+9+1+5=36

So, the required difference = 36 - 36 = 0

The number is divisible by 11.


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Comments

According to the divisibility rule of 9, the sum of all digits of a number must be divisible by 9. In this case, if we add this number 5+8+1+2+9+7+4+5+8+1+2+9+7+4= 72 Thus 72 is divisible by 9, which means 58129745812974 is divisible by 9. But according to the regular division method the above number is not divisible by 9. Can someone please explain me.
- syed,hardwell

That's my doubts
- ABINASH,JENA

Sir why 72 is not divisible by 9?
- ABINASH,JENA

According to 9 'S divisibility criteria it is supposed to be divisible by 9 but it is not divisible by 9 with actual division
- Goswami Raj,Moirangthem

5812974รท9=645886 So you need to practice your reguler division more
- Vikrant,Sangwan





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