यदि (n(A)=3) है, तो (n\(A\times A\)) कितना होगा?
If (n(A)=3), what is (n\(A\times A\))?
Explanation opens after your attempt
C. (9)
Concept
(n\(A\times A\)=n(A)n(A)=3\times 3=9). Even with the same set, the counts are multiplied.
Why this answer is correct
The correct answer is C. (9). (n\(A\times A\)=n(A)n(A)=3\times 3=9). Even with the same set, the counts are multiplied.
Exam Tip
(n\(A\times A\)=n(A)n(A)=3\times 3=9)। समान समुच्चय के साथ भी गुणा ही किया जाता है।
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