यदि \({7}\in \mathcal{P}(A)\) है, तो कौन सा कथन निश्चित रूप से सही है?
If \({7}\in \mathcal{P}(A)\), which statement is definitely true?
Explanation opens after your attempt
Correct Answer
A. \(7\in A\)
Concept
\({7}\in \mathcal{P}(A)\) means \({7}\subseteq A\). Therefore \(7\in A\) must be true.
Why this answer is correct
The correct answer is A. \(7\in A\). \({7}\in \mathcal{P}(A)\) means \({7}\subseteq A\). Therefore \(7\in A\) must be true.
Exam Tip
\({7}\in \mathcal{P}(A)\) का अर्थ है कि \({7}\subseteq A\)। इसलिए \(7\in A\) होना आवश्यक है।
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