Q: On compound interest (compounding annually) a certain sum becomes 3 times of itself in 4 years. In how many years will it becomes 9 times of itself? चक्रवृद्धि ब्याज (वार्षिक संयोजन पर) पर एक राशि 4 वर्षों में स्वयं की 3 गुना हो जाती है। कितने वर्षों में वह स्वयं की 9 गुना हो जाएगी?
A.
16 years/वर्ष
B.
8 years/वर्ष
C.
12 years/वर्ष
D.
10 years/वर्ष
Correct Answer:
Option B -
Explanations:
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