Correct Answer - Option 2 : 872631
Given
Digits 2,5,8 and 4 are not working,
Repetition of digit is not allowed
Calculation
The Largest number can be formed is 976310
and smallest number can be formed is 103679
⇒ The maximum difference = largest number - smallest number
⇒ 976310 - 103679 = 872631
∴The maximum difference between 2 number is 872631.