[\dfrac{1}{1000}] \dfrac{753 \times 753 + 247 \times 247 - 753 \times 247}{753 \times 753 \times 753 + 247 \times 247

For Competitive Exams

$\dfrac{753 \times 753 + 247 \times 247 - 753 \times 247}{753 \times 753 \times 753 + 247 \times 247 \times 247}$=?

$ \dfrac{1}{1000} $

$ \dfrac{1}{506} $

$ \dfrac{253}{500} $

None of these

Explanation:

Given Exp. =$ \dfrac{(a^2 + b^2 - ab)}{(a^3 + b^3)} = \dfrac{1}{(a + b)} = \dfrac{1}{(753 + 247)} = \dfrac{1}{1000} $

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