यदि \(U=\{1,2,3,4,5,6,7,8,9,10,11,12\}\) और \(A=\{3,6,9,12\}\) है, तो (A') में कितने अवयव हैं?

If \(U=\{1,2,3,4,5,6,7,8,9,10,11,12\}\) and \(A=\{3,6,9,12\}\), how many elements are in (A')?

Explanation opens after your attempt
Correct Answer

A. (8)

Step 1

Concept

(n(U)=12) and (n(A)=4), so (n(A')=12-4=8). Subtract from the total number in (U).

Step 2

Why this answer is correct

The correct answer is A. (8). (n(U)=12) and (n(A)=4), so (n(A')=12-4=8). Subtract from the total number in (U).

Step 3

Exam Tip

(n(U)=12) और (n(A)=4), इसलिए (n(A')=12-4=8)। गणना में (U) की कुल संख्या से घटाएं।

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Mathematics Answer, Explanation and Revision Hints

यदि \(U=\{1,2,3,4,5,6,7,8,9,10,11,12\}\) और \(A=\{3,6,9,12\}\) है, तो (A') में कितने अवयव हैं? / If \(U=\{1,2,3,4,5,6,7,8,9,10,11,12\}\) and \(A=\{3,6,9,12\}\), how many elements are in (A')?

Correct Answer: A. (8). Explanation: (n(U)=12) और (n(A)=4), इसलिए (n(A')=12-4=8)। गणना में (U) की कुल संख्या से घटाएं। / (n(U)=12) and (n(A)=4), so (n(A')=12-4=8). Subtract from the total number in (U).

Which concept should I revise for this Mathematics MCQ?

(n(U)=12) and (n(A)=4), so (n(A')=12-4=8). Subtract from the total number in (U).

What exam hint can help solve this Mathematics question?

(n(U)=12) और (n(A)=4), इसलिए (n(A')=12-4=8)। गणना में (U) की कुल संख्या से घटाएं।