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      Question

      The average of  8 numbers  is 45. If one of the

      numbers is removed, the average of the remaining  7 numbers  becomes 42. What is the  removed number ?
      A 45 Correct Answer Incorrect Answer
      B 66 Correct Answer Incorrect Answer
      C 73 Correct Answer Incorrect Answer
      D 22 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Sum of 8 numbers = 45 × 8 = 360 Sum of remaining 7 numbers = 42 × 7 = 294 Removed number = 360 − 294 = 66

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