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The average of 7 consecutive even numbers is A. If the next 5 consecutive even numbers are also included, what is the average of all 12 numbers?

Competition practiceStatistics
  • AA + 4
  • BA + 10
  • CA + 5
  • DA + 6

Step-by-Step Solution

The seven numbers are , …, (sum ). The next five are , …, (sum ). Average .
Answer: C) A + 5

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