किस स्थिति में \(A'=\emptyset\) होगा?
In which case will \(A'=\emptyset\)?
Explanation opens after your attempt
Correct Answer
A. जब (A=U)when (A=U)
Concept
The complement is empty when (A) takes the whole universal set. Therefore (A=U) is the correct case.
Why this answer is correct
The correct answer is A. जब (A=U) / when (A=U). The complement is empty when (A) takes the whole universal set. Therefore (A=U) is the correct case.
Exam Tip
पूरक तब रिक्त होगा जब (A) ने पूरे सार्वत्रिक समुच्चय को ले लिया हो। इसलिए (A=U) सही स्थिति है।
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