एक त्योहार सजावट में पहले द्वार पर (90) लाइटें हैं और हर अगले द्वार पर (25) लाइटें अधिक हैं। (10) द्वारों पर कुल कितनी लाइटें होंगी?
In a festival decoration the first gate has (90) lights and each next gate has (25) more lights. How many lights are there on (10) gates?
Explanation opens after your attempt
A. (2025)
Concept
The light numbers are \(90,115,140,\ldots\) and \(S_{10}=2025\). Exam tip: treat each gate as one term.
Why this answer is correct
The correct answer is A. (2025). The light numbers are \(90,115,140,\ldots\) and \(S_{10}=2025\). Exam tip: treat each gate as one term.
Exam Tip
लाइटों की संख्या \(90,115,140,\ldots\) है और \(S_{10}=2025\)। परीक्षा में प्रत्येक द्वार को एक पद मानें।
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