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CI at 10%: years for a principal to grow 1.331 times

The same question, asked 2 times: 13 Sep 2025 S3*, 15 Sep 2025 S1. Every wording below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    13 Sep 2025 S3

    63
    A principal of ₹1,00,000 is invested at 1010 % per annum compound interest, compounded annually. After how many years will the amount grow to ₹1,33,100?

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  2. Question 2

    15 Sep 2025 S1

    59
    In how many years will ₹50,000 become ₹66,550 at 10%10\% compound interest per annum?

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