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how many 2 element subsets {a, b} are there such that a and b are distinct and are from the set {1, 2, 3, ..., 34, 35, 36} and a * b is a perfect square?

 Oct 27, 2019
 #1
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https://math.stackexchange.com/questions/829831/find-the-number-of-2-element-subsets-a-b-of-1-cdots-1000-such-tha 

Use this link as reference

 Oct 27, 2019

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