If 2 is added to each even digit and 1 is subtracted from each odd digit in the number 4739215, what will be the difference between the greatest and smallest digits in the new number thus formed?

Correct option is A

Given:
The number is 4739215.

Logic:
Add 2 to each even digit.
Subtract 1 from each odd digit.

Explanation (step by step):
4 (even): Add 2 → 4 + 2 = 6
7 (odd): Subtract 1 → 7 - 1 = 6
3 (odd): Subtract 1 → 3 - 1 = 2
9 (odd): Subtract 1 → 9 - 1 = 8
2 (even): Add 2 → 2 + 2 = 4
1 (odd): Subtract 1 → 1 - 1 = 0
5 (odd): Subtract 1 → 5 - 1 = 4

So, the new number formed is: 6628404.

Now, find the greatest and smallest digits:
The greatest digit is 8.
The smallest digit is 0.

Difference:
8 - 0 = 8

Final Answer:
8

Final Correct Option:
(A) 8