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Quoc Tran Anh Le Coordinator

14/09/2018 at 07:06
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Find the smallest positive integer x such that 12x = 25y2, where y is a positive integer


AIMO


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    Alone 14/09/2018 at 16:17

    Because  \(\dfrac{12x}{25}\) is a square number but 12=22.3

    So \(x⋮25\) and x smallest so x=3.25=75

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