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Q:

Four numbers, when arranged in ascending order, are w, x, y and z. The average of the smallest three numbers is 25.5 while the average of the largest three was 29.5. What is the range of the data?

  • 1
    10
  • 2
    15
  • 3
    12
  • 4
    14
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Answer : 3. "12"

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