Maths-
General
Easy

Question

What is the least number which should be subtracted from 0.000456 to make it a perfect square ?

The correct answer is: 0.000015


    Explanation :
    Apply the long division method to the given number .


    We get the remainder as 0. 00 00 15  subtract it to get a perfect square .
    We get 0. 00 04 56 - 0. 00 00 15  = 0. 00 04 41 =  left parenthesis 21 right parenthesis squared cross times 10 to the power of negative 6 end exponent text  or  end text left parenthesis 0.0021 right parenthesis squared
    so we need to subtract 0.00 00 15 from 0.00 04 56 to make the decimal a perfect square .

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