railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Simplification Surds and Indices
If \(x = \frac{1}{{7 + 4\sqrt 3 }}\) and \(y = \frac{1}{{7 - 4\sqrt 3 }}\), then what is the value of \(\frac{{x\; + \;y}}{{2xy}}\)?
1
7
2
8
3
9
4
10