MCQ
$\left(A\cup B \cup C\right)\cap \left(A'\cup B \cup C\right) \cap B' \cap C'= $ ............
- A$A$
- B$B$
- C$C$
- ✓$\varnothing$
$(A \cup B \cup C) \cap (A'\cup B \cup C) \cap B' \cap C'$
$= [(A \cap A') \cup (B \cup C)] \cap (B' \cap C')$
( કારણ વિભાજનનો નિયમ )
$= [\phi \cup (B \cup C) ] \cap (B \cup C)'$
$= (B\cup C) \cap (B \cup C)'$
$= \varnothing$
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