non-used digitNumber Theory Level 3
A 7-digit number x with different digit divisible by each digit of x. From 0-9, what are 3 digit that can't be appear on x?
If its 1, 2, and 3 enter with 123 (increase order)
If you think the missing digits are 0, 1, 2, then type it in as 012 or 12.