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Six numbers have a mean of 25. When one of them is removed, the mean of the remaining 5 numbers is 23. What number was removed?

Competition practiceData & Probability
  • A35
  • B25
  • C2
  • D48

Step-by-Step Solution

Total of 6 numbers = 150; total of the remaining 5 = 115. Removed number = 150 − 115 = 35.
Answer: A) 35

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