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Eleven numbers have a mean of 50. The mean of the first six is 49 and the mean of the last six is 52. If the sixth number is struck off, what is the mean of the remaining ten?

Competition practiceStatistics
  • A49.6
  • B56
  • C49.4
  • D50

Step-by-Step Solution

Sixth number . Remaining total , mean . (56 is the struck-off number.)
Answer: C) 49.4

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