railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Simplification Surds and Indices

যদি \(x = \frac{1}{{7 + 4\sqrt 3 }}\) এবং \(y = \frac{1}{{7 - 4\sqrt 3 }}\) , তবে  \(\frac{{x\; + \;y}}{{2xy}}\) এর মানটি কত হবে? 

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