यदि (A) के कुल उपसमुच्चय 64 हैं, तो (A) में कितने अवयव हैं?
If (A) has 64 subsets, how many elements does (A) have?
Explanation opens after your attempt
B. 6
Concept
Total subsets are \(2^n=64\), so (n=6). Recognising powers is the quick method.
Why this answer is correct
The correct answer is B. 6. Total subsets are \(2^n=64\), so (n=6). Recognising powers is the quick method.
Exam Tip
कुल उपसमुच्चय \(2^n=64\) हैं, इसलिए (n=6)। घातों को पहचानना तेज तरीका है।
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