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The mean of five numbers is 18. When one number is removed, the mean of the remaining four becomes 16. The removed number is:

Competition practiceData & Probability
  • A29
  • B23
  • C52
  • D26

Step-by-Step Solution

Sum of 5 numbers = . Sum of 4 numbers = . Removed number = 90 − 64 = 26.
Answer: D) 26

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