यदि संख्या रेखा पर (a) पर खुला सिरा और (b) पर बंद सिरा है तथा (a<b), तो कौन सा अंतराल सही है?
If a number line has an open endpoint at (a) and a closed endpoint at (b), where (a<b), which interval is correct?
Explanation opens after your attempt
B. ((a,b])
Concept
The open endpoint excludes (a), and the closed endpoint includes (b). Therefore the interval is ((a,b]).
Why this answer is correct
The correct answer is B. ((a,b]). The open endpoint excludes (a), and the closed endpoint includes (b). Therefore the interval is ((a,b]).
Exam Tip
खुला सिरा (a) को बाहर रखता है और बंद सिरा (b) को शामिल करता है। इसलिए अंतराल ((a,b]) होगा।
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