Numbers - Arithmetic Aptitude Questions and Answers

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${753\times753+247{ \times247-753 \times247} \over 753 \times753 \times753+247 \times247 \times247 }$ =?

${1 \over1000}$

${1 \over 506}$

${253 \over 500}$

None of these

Answer : Option A

Explanation :

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

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