MCQ
બે અલગ ગણો ન હોય તેવા ગણ $A$ અને $B$ માટે $n(A \cup B)$ =
- A$n(A) + n(B)$
- ✓$n(A) + n(B) - n(A \cap B)$
- C$n(A) + n(B) + n(A \cap B)$
- D$n(A)\,n(B)$
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