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
Correct Answer

A. (7)

Step 1

Concept

(U) has (10) elements and \(A^c\) has (3) elements. Therefore (n(A)=10-3=7).

Step 2

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).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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)?

Correct Answer: A. (7). Explanation: (U) में (10) तत्व हैं और \(A^c\) में (3) तत्व हैं। इसलिए (n(A)=10-3=7) होगा। / (U) has (10) elements and \(A^c\) has (3) elements. Therefore (n(A)=10-3=7).

Which concept should I revise for this Mathematics MCQ?

(U) has (10) elements and \(A^c\) has (3) elements. Therefore (n(A)=10-3=7).

What exam hint can help solve this Mathematics question?

(U) में (10) तत्व हैं और \(A^c\) में (3) तत्व हैं। इसलिए (n(A)=10-3=7) होगा।