Aptitude - Numbers - Discussion

I totally agree with you. Thank you @Ramesh.

Divisibility rule for 8:

Check the last 3 digits;

If the 3rd last digit is even then check if the number formed by the last 2 digits is divisible by 8. If yes then it is divisible.

If the 3rd last digit is odd then check if the number formed by the last 2 digits + 4 is divisible by 8. If yes then the number is divisible.

In this example:

The 3rd last digit is 6 which is even and the number formed by the last two digits must divisible by 8. Hence the 2nd last digit should be 3 as 32 is divisible by 8.

Hope it helps.

Divisibility rule for 8:

Check the last 3 digits;

If the 3rd last digit is even then check if the number formed by the last 2 digits is divisible by 8. If yes then it is divisible.

If the 3rd last digit is odd then check if the number formed by the last 2 digits + 4 is divisible by 8. If yes then the number is divisible.

In this example:

The 3rd last digit is 6 which is even and the number formed by the last two digits must divisible by 8. Hence the 2nd last digit should be 3 as 32 is divisible by 8.

Hope it helps.

The given no is completely divided by 8 only when last three digits are completely divided by 8.
here last three digits are 6*2.

If we put 3 in place of * then it will completely be divided by 8. Hence 3 is the answer.
Hope all got it now.

Explain the solution, please.

I agree with answers @Ramesh.

6 x 2 (where x=7 also divisible by 8) and 9187672 also divisible by 8.

So that, we can get an answer with a Two-way number.

I agree with the answer @Ramesh.

How did you check the answer if it is 3?

How the answer is 3?

Please explain.