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After three years at 10% compound interest, an investment is ₹1,331. What was the principal?

A₹900
B₹1,000
C₹1,100
D₹1,210
Answer & Solution
Correct answer: B. ₹1,000
Dividing ₹1,331 by 1.1³ gives a principal of ₹1,000.
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