यदि \(A=\{1,2\}\) है तो (A) के कुल उपसमुच्चयों की संख्या क्या है?
If \(A=\{1,2\}\) then what is the total number of subsets of (A)?
Explanation opens after your attempt
Correct Answer
C. (4)
Concept
If a set has (n) elements then it has \(2^n\) subsets. Here \(2^2=4\).
Why this answer is correct
The correct answer is C. (4). If a set has (n) elements then it has \(2^n\) subsets. Here \(2^2=4\).
Exam Tip
यदि समुच्चय में (n) अवयव हों तो उपसमुच्चय \(2^n\) होते हैं। यहां \(2^2=4\) है।
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