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Add to a Square Number

Math brain teasers require computations to solve.

 

Puzzle ID:#48638
Fun:** (1.82)
Difficulty:*** (2.85)
Category:Math
Submitted By:shenqiangAcn****!!

 

 

 



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?

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