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Q: The average of eleven numbers is 56. The average of first three numbers is 52 and of next five number is 60. 9th and 10th numbers are 3 and 1 more then 11th respectively. Find the average of 9th and 11th numbers?
  • A. 54
  • B. 53.5
  • C. 52.5
  • D. 52
Correct Answer: Option B -
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Explanations:

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