Correct option is B
Given:
The number has six digits.
Concept Used:
The greatest six-digit number is 999999 and the smallest six-digit number is 100000
Formula Used:
Difference = Greatest number - Smallest number
Solution:
The greatest six-digit number is 999,999 and the smallest six-digit number is 100,000
Difference = 999999 − 100000 = 899999
Thus, the difference between the greatest and the smallest six-digit number is 899999