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      Question

      Average of four numbers is 25. Sum of smallest and

      largest number is 54. If difference between other two numbers is 2, then find the square of second smaller number.
      A 484 Correct Answer Incorrect Answer
      B 625 Correct Answer Incorrect Answer
      C 361 Correct Answer Incorrect Answer
      D 441 Correct Answer Incorrect Answer

      Solution

      Let four numbers in increasing order is a, b, c and d. => a + b + c + d = 4 x 25 = 100 => a + d = 54 => b + c = 46 According to question, => c – b = 2 => b = 22, c = 24 => b² = 484

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