To determine the greatest possible number that can be generated using the digits 5, 9, 3, 0, and 6, you should arrange the digits in descending order. That is, you want to put the highest digits at the leftmost positions, next highest digits in the following positions, and so on. Doing this maximizes the value of each digit according to its place value.
Here are the digits you provided: 5, 9, 3, 0, 6
The first step is to sort these digits from greatest to least:
9, 6, 5, 3, 0
Now, you simply need to write these digits next to each other in this order to create the greatest possible number:
96530
The greatest number that can be generated using the digits 5, 9, 3, 0, and 6 is 96530.