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Add to a Square Number
| Category: | Math |
| Submitted By: | shenqiang |
| Fun: |  (1.69) |
| Difficulty: | (2.85) |
A, B and C are positive integers such that 3^A+5^B+7^C is a square number.
What is the minimum value of this square number?
Answer:
3^3+5^1+7^2=81.
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