यदि \(A={x\in\mathbb{R}: x^2<9}\) और \(B={x\in\mathbb{R}: x\ge 1}\), तो (A-B) क्या है?

If \(A={x\in\mathbb{R}: x^2<9}\) and \(B={x\in\mathbb{R}: x\ge 1}\), what is (A-B)?

Explanation opens after your attempt
Correct Answer

A. ((-3,1))

Step 1

Concept

(A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).

Step 2

Why this answer is correct

The correct answer is A. ((-3,1)). (A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).

Step 3

Exam Tip

(A=(-3,3)) है और (B) में (1) तथा उससे बड़े सभी वास्तविक संख्याएं हैं। इसलिए (A-B=(-3,1)) है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A={x\in\mathbb{R}: x^2<9}\) और \(B={x\in\mathbb{R}: x\ge 1}\), तो (A-B) क्या है? / If \(A={x\in\mathbb{R}: x^2<9}\) and \(B={x\in\mathbb{R}: x\ge 1}\), what is (A-B)?

Correct Answer: A. ((-3,1)). Explanation: (A=(-3,3)) है और (B) में (1) तथा उससे बड़े सभी वास्तविक संख्याएं हैं। इसलिए (A-B=(-3,1)) है। / (A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).

Which concept should I revise for this Mathematics MCQ?

(A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).

What exam hint can help solve this Mathematics question?

(A=(-3,3)) है और (B) में (1) तथा उससे बड़े सभी वास्तविक संख्याएं हैं। इसलिए (A-B=(-3,1)) है।