एक जिम में पहले महीने (22) सदस्य जुड़े और हर अगले महीने (7) सदस्य अधिक जुड़े। (12) महीनों में कुल कितने सदस्य जुड़े?
In a gym (22) members joined in the first month and (7) more members joined each next month. How many members joined in (12) months?
Explanation opens after your attempt
C. (726)
Concept
The member numbers are \(22,29,36,\ldots\) and \(S_{12}=726\). Exam tip: treat monthly new members as AP terms.
Why this answer is correct
The correct answer is C. (726). The member numbers are \(22,29,36,\ldots\) and \(S_{12}=726\). Exam tip: treat monthly new members as AP terms.
Exam Tip
सदस्यों की संख्या \(22,29,36,\ldots\) है और \(S_{12}=726\)। परीक्षा में नए सदस्यों की मासिक संख्या को ए.पी. मानें।
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