What is the greatest six digit odd number using three different digits only?

Answer 1

In this type of question, you need to fill out the largest digit you can, one at a time, from left to right. The largest digit you can use for the leftmost position, is 9, the largest digit for the next position is 9, etc.; in summary, the final result is:999999 (if you want AT MOST three different digits), or

999987 (if you want EXACTLY three different digits).

Answer 2

It is 999987.

Answer 3

987987