Mathematics · Arithmetic Progression
एक नए वर्ष में, देव ने पहले सप्ताह में Rs. 50 बचाए और फिर अपनी साप्ताहिक बचत में Rs. 17.50 की वृद्धि की। यदि n-वें सप्ताह में उसकी साप्ताहिक बचत Rs. 207.50 हो जाती है, तो n का मान ज्ञात कीजिए।
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- 210✓
- 315
- 420
सही उत्तर देखें
10
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