यदि (A=(2,6)), तो कौन-सा कथन सत्य है?
If (A=(2,6)), which statement is true?
Explanation opens after your attempt
C. \(4\in A\)
Concept
In the open interval ((2,6)), endpoints (2) and (6) are not included.
Why this answer is correct
(4) lies between them, so \(4\in A\).
Exam Tip
In open intervals, middle points are included but endpoints are not. चरण 1: खुले अंतराल ((2,6)) में छोर (2) और (6) शामिल नहीं हैं। चरण 2: (4) दोनों के बीच है, इसलिए \(4\in A\)। चरण 3: खुले अंतराल में बीच की संख्याएँ आती हैं, छोर नहीं।
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