The greatest four-digited number that you can be made using the digits 0, 5, 9, 8 is___.

Hint:

In this question we will have to form 4 digit number using the given numbers and the number formed should be the greatest. Any number containing 4 digits will be a four digit number starting from 1000 to 9999. In the question we have four different digits which we have to arrange to form the greatest number. If we will try to make a number starting with digit 0 then the number formed will be a three digit number. To form greatest number we will make the number starting with the greatest digit given and arrange in an ascending order which will give us the required number.