समुच्चय \({x\in\mathbb{R}: -1<x<3}\) का सही अंतराल रूप कौन सा है?
Which interval form represents \({x\in\mathbb{R}: -1<x<3}\)?
Explanation opens after your attempt
A. ((-1,3))
Concept
Both inequalities are strict, so both endpoints use open parentheses. The values (-1) and (3) are not included.
Why this answer is correct
The correct answer is A. ((-1,3)). Both inequalities are strict, so both endpoints use open parentheses. The values (-1) and (3) are not included.
Exam Tip
दोनों असमानताएं कठोर हैं, इसलिए दोनों सिरों पर खुला कोष्ठक लगेगा। (-1) और (3) शामिल नहीं हैं।
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