यदि \(U=\{1,2,3,4,5,6,7,8,9,10\}\) और \(A^c={1,4,9}\) है, तो (A) में कितने तत्व होंगे?
If \(U=\{1,2,3,4,5,6,7,8,9,10\}\) and \(A^c={1,4,9}\), how many elements are in (A)?
Explanation opens after your attempt
A. (7)
Concept
(U) has (10) elements and \(A^c\) has (3) elements. Therefore (n(A)=10-3=7).
Why this answer is correct
The correct answer is A. (7). (U) has (10) elements and \(A^c\) has (3) elements. Therefore (n(A)=10-3=7).
Exam Tip
(U) में (10) तत्व हैं और \(A^c\) में (3) तत्व हैं। इसलिए (n(A)=10-3=7) होगा।
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