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GCD & LCMhard
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Find the number of ordered pairs of positive integers (x,y)(x, y)(x,y) such that GCD(x,y)=5\text{GCD}(x, y) = 5GCD(x,y)=5 and LCM(x,y)=150\text{LCM}(x, y) = 150LCM(x,y)=150.