Hi Rebecca,

There are 24 numbers you can form from the digits 8, 6, 1 and 4. I think you want to determine how many of them are divisible by 7. Unfortunately I don't see a nice way to do this. I think you just have to list the 24 numbers and try to divide each by 7.

You can list the numbers in dictionary order as if the digits were numbers. The list starts

1468
1486
1648
1684
1846
1864
4168

and so on.

I hope this helps,
penny