यदि (A) में (5) तत्व हैं, तो (A) के ऐसे उपसमुच्चयों की संख्या कितनी होगी जिनमें दो निश्चित तत्व न हों?
If (A) has (5) elements, how many subsets of (A) do not contain two fixed elements?
Explanation opens after your attempt
B. (8)
Concept
After excluding two fixed elements, (3) elements remain. Their subsets are \(2^3=8\).
Why this answer is correct
The correct answer is B. (8). After excluding two fixed elements, (3) elements remain. Their subsets are \(2^3=8\).
Exam Tip
दो निश्चित तत्व हटाने पर (3) तत्व बचते हैं। इनके उपसमुच्चय \(2^3=8\) होंगे।
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