यदि \(A\cup B=A\) और \(B\cup C=C\), तो कौन सा संबंध अवश्य सत्य है?
If \(A\cup B=A\) and \(B\cup C=C\), which relation must be true?
Explanation opens after your attempt
Correct Answer
A. \(B\subseteq A\cap C\)
Concept
The first condition gives \(B\subseteq A\), and the second gives \(B\subseteq C\). Hence \(B\subseteq A\cap C\).
Why this answer is correct
The correct answer is A. \(B\subseteq A\cap C\). The first condition gives \(B\subseteq A\), and the second gives \(B\subseteq C\). Hence \(B\subseteq A\cap C\).
Exam Tip
पहली शर्त से \(B\subseteq A\) और दूसरी से \(B\subseteq C\) है। इसलिए \(B\subseteq A\cap C\) है।
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