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The sum of the digits of a two-digit number is 15 and the difference between the digits is 3. What is the two-digit number?

Correct Answer: Cannot be determined

Explanation:

Let the ten's digit be x and unit's digit be y.


Then, x + y = 15 and x - y = 3   or   y - x = 3.


Solving x + y = 15   and   x - y = 3, we get: x = 9, y = 6.


Solving x + y = 15   and   y - x = 3, we get: x = 6, y = 9.


So, the number is either 96 or 69.


Hence, the number cannot be determined.


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