MCQ
If $x = 2, y = 3$ then $\frac{1}{\text{x}^\text{y}}+\frac{1}{\text{y}^\text{x}}=.......$
  • A
    $72$
  • $\frac{17}{72}$
  • C
    $\frac{31}{108}$
  • D
    $\text{None of these}$

Answer

Correct option: B.
$\frac{17}{72}$

$\frac{1}{2^3}+\frac{1}{3^2}$
$=\frac{1}{8}+\frac{1}{9}$
$=\frac{9+8}{72}$
$=\frac{17}{72}$

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