The difference between the largest 5-digit number and smallest 5-digit number is
A. 90,000
B. 89,999
C. 109,999
D. None

Hint: - The largest 5-digit number is 99999 and the smallest 5-digit number is 10000. If it was mentioned that the largest unique 5-digit number then it would have been 98765 and the smallest 5-digit number would have been 10234.

Complete step-by-step answer:
The Largest 5-digit number is 99,999 and the Smallest 5-digit number is 10,000
When we subtract the Largest 5-digit number with the Smallest 5-digit number then
$99,999 - 10,000 = 89,999$
The difference between the Largest 5-digit number with the Smallest 5-digit number is 89,999
Here option B is the correct answer.

Note: - For solving such types of problems we must read the question nicely. Many times, it is said that the number must be unique. Then in this case the largest and the smallest digit number changes. But in this there was nothing mentioned like that.