यदि $x^{1/2} y^{1/3} = (x + y)^n$ और $x \frac{dy}{dx} - y = 0$ है, तो $n =$ का मान क्या है?

  • A
    $1$
  • B
    $\frac{6}{5}$
  • C
    $\frac{5}{6}$
  • D
    $\frac{4}{9}$

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