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      Question

      Aman saves Rs. 5,800 in a bank at 9% simple interest for 4

      years. If he gets back Rs. '2q' in total, calculate the product of digits of 'q'.
      A 625 Correct Answer Incorrect Answer
      B 750 Correct Answer Incorrect Answer
      C 432 Correct Answer Incorrect Answer
      D 450 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      ATQ,

      Simple interest = Principal × Rate × Time ÷ 100

      Interest earned = 5,800 × 9 × 4 ÷ 100 = Rs. 2,088

      2q = 5,800 + 2,088
      Or, 2q = 7,888

      Or, q = 3,944

      Required product = 3 × 9 × 4 × 4 = 432

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