Decimal Fraction - Arithmetic Aptitude Questions and Answers

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$\frac {4.2 *4.2-1.9*1.9 } { 2 .3*6.1}$ is equal to:

0.5

1.0

Answer : Option B

Explanation :

Given Expression = $\frac { (a^2-b^2) } {(a+b)(a-b)}$ = $\frac { (a^2-b^2) } { (a^2-b^2)} =1$

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