જો $A = \{x, y\}$ હોય,તો $A$ નો ઘાતગણ (power set) કયો છે?

  • A
    $\{x^x, y^y\}$
  • B
    $\{\phi, x, y\}$
  • C
    $\{\phi, \{x\}, \{2y\}\}$
  • D
    $\{\phi, \{x\}, \{y\}, \{x, y\}\}$

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