Question

What is the least number which should be subtracted from 0.000326 to make it a perfect square?

• A. 0.000002
• B. 0.000004
• C. 0.02
• D. 0.04
• E. 0.4

Answer 1

The correct option is A

0.000002

$0.000326=\frac{326}{{10}^6}.$

$\therefore$ Required number to be subtracted $=\frac{2}{{10}^6}=\mathrm{0.000002.}$