किसी समान्तर श्रेणी में \(a_{2m}=58\), \(a_{m}=31\) और (d=3) है। (m) का मान क्या है?
In an AP, \(a_{2m}=58\), \(a_m=31\), and (d=3). What is the value of (m)?
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Correct Answer
B. (9)
Concept
\(a_{2m}-a_m=md=27\), so (3m=27) and (m=9). In an AP, term difference is linked to position difference.
Why this answer is correct
The correct answer is B. (9). \(a_{2m}-a_m=md=27\), so (3m=27) and (m=9). In an AP, term difference is linked to position difference.
Exam Tip
\(a_{2m}-a_m=md=27\) इसलिए (3m=27) और (m=9)। समान्तर श्रेणी में पदों का अंतर स्थान अंतर से जुड़ा होता है।
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