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Six numbers have a mean of 34. Dropping one of them lowers the mean of the remaining five to 31. Which number was dropped?

Competition practiceAverages & Ages
  • A49
  • B46
  • C37
  • D52

Step-by-Step Solution

Sum of six = ; sum of five = . Dropped number = 204 − 155 = 49.
Answer: A) 49

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