एक पेड़ पर प्रतिदिन फल तोड़े गए: \(12,18,24,\ldots\)। पहले (15) दिनों में कुल कितने फल तोड़े गए?
Fruits plucked from a tree each day were \(12,18,24,\ldots\). How many fruits were plucked in the first (15) days?
Explanation opens after your attempt
C. (810)
Concept
The fifteenth term is (96), so the total is (S_{15}=\frac{15}{2}(12+96)=810) fruits. Treat the number of days as the number of terms.
Why this answer is correct
The correct answer is C. (810). The fifteenth term is (96), so the total is (S_{15}=\frac{15}{2}(12+96)=810) fruits. Treat the number of days as the number of terms.
Exam Tip
पंद्रहवाँ पद (96) है, इसलिए कुल (S_{15}=\frac{15}{2}(12+96)=810) फल हैं। दिनों की संख्या को पदों की संख्या मानें।
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