Aptitude - Decimal Fraction - Discussion

Discussion Forum : Decimal Fraction - General Questions (Q.No. 8)

Decimal Fraction

The expression (11.98 x 11.98 + 11.98 x x + 0.02 x 0.02) will be a perfect square for x equal to:

0.02

0.2

0.04

0.4

Answer: Option

Explanation:

Given expression = (11.98)² + (0.02)² + 11.98 x x.

For the given expression to be a perfect square, we must have

11.98 x x = 2 x 11.98 x 0.02 or x = 0.04

Discussion:

27 comments Page 2 of 3.

Jaanu Jaanu said: 3 years ago

Thanks for the clear explanation @Nandaraj.

Ria said: 1 decade ago

How 11.98*x = 2*11.98*0.02 is equal?

Deepti said: 1 decade ago

Please describe whole calculation.

Abhilash said: 5 years ago

Compare with [ (a+b) ^2 ] formula.

(3)

Supriyo Ghosh said: 3 years ago

Well explained, Thanks @Nandaraj.

(1)

Ivan said: 3 years ago

Thanks for explaining @Nandaraj.

Pinku kumar singh said: 8 years ago

Thanks for the explanation.

Rakesh said: 4 years ago

Thank you @Nandaraj.

Abhishek Srivastava said: 4 years ago

Thank you @Nandaraj.

Bipul Raj Dahal said: 7 years ago

Thanks @Nandaraj.

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