एक जिम में पहले महीने (30) सदस्य जुड़े और हर अगले महीने (8) सदस्य अधिक जुड़े। (15) महीनों में कुल कितने सदस्य जुड़े?

In a gym (30) members joined in the first month and (8) more members joined each next month. How many members joined in (15) months?

Explanation opens after your attempt
Correct Answer

C. (1290)

Step 1

Concept

The member numbers are \(30,38,46,\ldots\) and \(S_{15}=1290\). Exam tip: treat monthly new members as AP terms.

Step 2

Why this answer is correct

The correct answer is C. (1290). The member numbers are \(30,38,46,\ldots\) and \(S_{15}=1290\). Exam tip: treat monthly new members as AP terms.

Step 3

Exam Tip

सदस्यों की संख्या \(30,38,46,\ldots\) है और \(S_{15}=1290\)। परीक्षा में नए सदस्यों की मासिक संख्या को ए.पी. मानें।

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Mathematics Answer, Explanation and Revision Hints

एक जिम में पहले महीने (30) सदस्य जुड़े और हर अगले महीने (8) सदस्य अधिक जुड़े। (15) महीनों में कुल कितने सदस्य जुड़े? / In a gym (30) members joined in the first month and (8) more members joined each next month. How many members joined in (15) months?

Correct Answer: C. (1290). Explanation: सदस्यों की संख्या \(30,38,46,\ldots\) है और \(S_{15}=1290\)। परीक्षा में नए सदस्यों की मासिक संख्या को ए.पी. मानें। / The member numbers are \(30,38,46,\ldots\) and \(S_{15}=1290\). Exam tip: treat monthly new members as AP terms.

Which concept should I revise for this Mathematics MCQ?

The member numbers are \(30,38,46,\ldots\) and \(S_{15}=1290\). Exam tip: treat monthly new members as AP terms.

What exam hint can help solve this Mathematics question?

सदस्यों की संख्या \(30,38,46,\ldots\) है और \(S_{15}=1290\)। परीक्षा में नए सदस्यों की मासिक संख्या को ए.पी. मानें।