यदि \(A=\{r,s,t\}\) है तो (\mathcal{P}(A)) में \(\emptyset\) क्यों होता है?
If \(A=\{r,s,t\}\), why is \(\emptyset\) in (\mathcal{P}(A))?
Explanation opens after your attempt
Correct Answer
A. क्योंकि \(\emptyset\subseteq A\)because \(\emptyset\subseteq A\)
Concept
The empty set is a subset of every set. Therefore it appears as an element in every power set.
Why this answer is correct
The correct answer is A. क्योंकि \(\emptyset\subseteq A\) / because \(\emptyset\subseteq A\). The empty set is a subset of every set. Therefore it appears as an element in every power set.
Exam Tip
रिक्त समुच्चय हर समुच्चय का उपसमुच्चय होता है। इसलिए वह हर घात समुच्चय में तत्व के रूप में आता है।
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