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Math,PS

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Senior | Next Rank: 100 Posts
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Math,PS

by ukr.net » Fri Nov 30, 2007 9:30 am
If y is the smallest positive integer such that 3,150 multiplied by y is the square of an integer, then y must be

2
5
6
7
14

ANS IS D ,why?
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by Suyog » Fri Nov 30, 2007 10:33 am
3150 = 2 * 3 * 3 * 5 * 5 * 7

to make this number a perfect square, the number shud be multiplied by 14 i.e. 7 * 2

Ans shud be E
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