Mathematics · Compound Interest
वार्षिक रूप से संयोजित होने वाले चक्रवृद्घि ब्याज पर एक बैंक खाते में धन 7 वर्षों में दोगुना हो जाता है। बैंक में इस राशि को प्रारंभिक राशि का 8 गुना करने के लिए कितने वर्षों की आवश्यकता होगी?
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