यदि (n(A-B)=0), (n(B-C)=0) और (n(A)>0) है, तो कौन सा संबंध अवश्य सही है?
If (n(A-B)=0), (n(B-C)=0) and (n(A)>0), which relation must be true?
Explanation opens after your attempt
A. \(A\subseteq C\)
Concept
(A-B=0) gives \(A\subseteq B\), and (B-C=0) gives \(B\subseteq C\). Therefore, \(A\subseteq C\) must be true.
Why this answer is correct
The correct answer is A. \(A\subseteq C\). (A-B=0) gives \(A\subseteq B\), and (B-C=0) gives \(B\subseteq C\). Therefore, \(A\subseteq C\) must be true.
Exam Tip
(A-B=0) से \(A\subseteq B\) और (B-C=0) से \(B\subseteq C\) मिलता है। इसलिए \(A\subseteq C\) अवश्य सही है।
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