समीकरण $\left| \begin{array}{ccc} 1 - \lambda & 2 & 1 \\ -3 & \lambda & -2 \\ 2 & -2 & 1 + \lambda \end{array} \right| = 0$ के धनात्मक पूर्णांक हलों की संख्या क्या है?

  • A
    $0$
  • B
    $2$
  • C
    $3$
  • D
    $1$

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