यदि (A=B) और \(A=\{5,6,7,8\}\), तो (n(B)) क्या होगा?
If (A=B) and \(A=\{5,6,7,8\}\), what is (n(B))?
Explanation opens after your attempt
C. (4)
Concept
Equal sets have exactly the same elements.
Why this answer is correct
Therefore, (B) also contains (5,6,7,8).
Exam Tip
Hence (B) has (4) elements. चरण 1: समान समुच्चयों में सभी तत्व समान होते हैं। चरण 2: इसलिए (B) में भी (5,6,7,8) होंगे। चरण 3: (B) में (4) तत्व हैं।
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