यदि \(A\subseteq B\), तो \(A\cup B\) किसके बराबर होगा?

If \(A\subseteq B\), then \(A\cup B\) is equal to what?

Explanation opens after your attempt
Correct Answer

B. (B)

Step 1

Concept

When every element of (A) is already in (B), union adds nothing new. Hence \(A\cup B=B\).

Step 2

Why this answer is correct

The correct answer is B. (B). When every element of (A) is already in (B), union adds nothing new. Hence \(A\cup B=B\).

Step 3

Exam Tip

जब (A) का हर अवयव (B) में है, तो मिलाने पर नया अवयव नहीं आता। इसलिए \(A\cup B=B\)।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A\subseteq B\), तो \(A\cup B\) किसके बराबर होगा? / If \(A\subseteq B\), then \(A\cup B\) is equal to what?

Correct Answer: B. (B). Explanation: जब (A) का हर अवयव (B) में है, तो मिलाने पर नया अवयव नहीं आता। इसलिए \(A\cup B=B\)। / When every element of (A) is already in (B), union adds nothing new. Hence \(A\cup B=B\).

Which concept should I revise for this Mathematics MCQ?

When every element of (A) is already in (B), union adds nothing new. Hence \(A\cup B=B\).

What exam hint can help solve this Mathematics question?

जब (A) का हर अवयव (B) में है, तो मिलाने पर नया अवयव नहीं आता। इसलिए \(A\cup B=B\)।