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If y is the smallest Positive integer such that 3150

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If y is the smallest Positive integer such that 3150 [#permalink] New post 18 Feb 2004, 23:48
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If y is the smallest Positive integer such that 3150 multiplied by y is the square of an Integer, then y must be:
A.2 b. 3 c.7 d. 4 e. 14
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 [#permalink] New post 19 Feb 2004, 00:00
I go with E.

B and C are out because they are odd.
A and D do not work. Just do the multiplication and you can see that there is not square.
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 [#permalink] New post 19 Feb 2004, 05:57
E. 3150= 5*5*3*3*7*2, so we need one 7 and one 2 to make it a square of a number. so 7*2= 14
  [#permalink] 19 Feb 2004, 05:57
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