Let A3BC and DE2F be four-digit numbers where each letter represents a different digit greater than 3. If the sum of the numbers is 15902, then what is the difference between the values of A and D?
A
1
B
2
C
3
D
4
Correct Answer: Option C
Explanation
We are given the addition:
A 3 B C
+ D E 2 F
---------
1 5 9 0 2
**Step 1: Define the Digital Pool**
Since all digits are different and greater than 3, our available pool of digits is **{4, 5, 6, 7, 8, 9}**. There are exactl