यदि (\(A\cup B\)'=\varnothing) और \(A\cap B=\varnothing\), तो (B) किसके बराबर होगा?
If (\(A\cup B\)'=\varnothing) and \(A\cap B=\varnothing\), then (B) is equal to what?
Explanation opens after your attempt
B. (A')
Concept
The first condition gives \(A\cup B=U\), and the second says they are disjoint. Therefore (B) is exactly (A').
Why this answer is correct
The correct answer is B. (A'). The first condition gives \(A\cup B=U\), and the second says they are disjoint. Therefore (B) is exactly (A').
Exam Tip
पहली शर्त से \(A\cup B=U\) और दूसरी से दोनों असंयुक्त हैं। इसलिए (B) ठीक (A') है।
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