Thursday, August 1, 2013

solution to question paper 1 - IPM STD V



The least number to be multiplied by 17640 so that the result becomes a perfect square is -------------



Answer:

17640 = 3 x 3 x 2 x 2 x 7 x 7 x 2 x 5

So, the least that should be multiplied = 2 x 5 = 10 to make it a perfect square.

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