Question

Which is the greatest five digit number formed by using the digits 5,6,7,8,9,only once and divisible by 8

Answer 1

The number should be divisible by 8. So the number formed by the last three digits should also be divided by 8.

So the ones digit cannot be 5, 7 and 9.

Let me take the smallest even among them as ones digit, i.e., 6.

576 is a multiple of 8. So take the number formed by the last three digits be 576.

Take 9 as first digit and 8 as thousands digit.

So the number is 98576.

Hope this will be the right.

Answer 2

The number should be divisible by 8. So the number formed by the last three digits should also be divided by 8.

So the ones digit cannot be 5, 7 and 9.

Let me take the smallest even among them as ones digit, i.e., 6.

576 is a multiple of 8. So take the number formed by the last three digits be 576.

Take 9 as first digit and 8 as thousands digit.

So the number is 98576.

Hope this will be the right.