यदि (n(A)=15) और (n(A')=35) है, तो (n(U)) क्या होगा?

If (n(A)=15) and (n(A')=35), what is (n(U))?

Explanation opens after your attempt
Correct Answer

A. (50)

Step 1

Concept

(A) and (A') together form (U), so (n(U)=15+35=50). This comes from \(A\cup A'=U\).

Step 2

Why this answer is correct

The correct answer is A. (50). (A) and (A') together form (U), so (n(U)=15+35=50). This comes from \(A\cup A'=U\).

Step 3

Exam Tip

(A) और (A') मिलकर (U) बनाते हैं, इसलिए (n(U)=15+35=50)। यह \(A\cup A'=U\) से आता है।

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Mathematics Answer, Explanation and Revision Hints

यदि (n(A)=15) और (n(A')=35) है, तो (n(U)) क्या होगा? / If (n(A)=15) and (n(A')=35), what is (n(U))?

Correct Answer: A. (50). Explanation: (A) और (A') मिलकर (U) बनाते हैं, इसलिए (n(U)=15+35=50)। यह \(A\cup A'=U\) से आता है। / (A) and (A') together form (U), so (n(U)=15+35=50). This comes from \(A\cup A'=U\).

Which concept should I revise for this Mathematics MCQ?

(A) and (A') together form (U), so (n(U)=15+35=50). This comes from \(A\cup A'=U\).

What exam hint can help solve this Mathematics question?

(A) और (A') मिलकर (U) बनाते हैं, इसलिए (n(U)=15+35=50)। यह \(A\cup A'=U\) से आता है।