यदि $A$ और $B$ विसंघित (disjoint) समुच्चय हैं,तो $n(A \cup B) = $

  • A
    $n(A)$
  • B
    $n(B)$
  • C
    $n(A) + n(B)$
  • D
    $n(A) \times n(B)$

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