यदि संख्या रेखा पर (13) पर खुला बिंदु है और बाईं ओर छायांकन है, तो interval notation क्या है?
If the number line has an open dot at (13) and shading to the left, what is the interval notation?
Explanation opens after your attempt
Correct Answer
D. (\(-\infty,13\))
Concept
The open dot excludes (13), and left shading means (x<13). In exams, read a left ray as the less than side.
Why this answer is correct
The correct answer is D. (\(-\infty,13\)). The open dot excludes (13), and left shading means (x<13). In exams, read a left ray as the less than side.
Exam Tip
खुला बिंदु (13) को बाहर रखता है और बाईं ओर shading (x<13) बताती है। परीक्षा में left ray को less than side समझें।
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