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Q: The average of twelve numbers is 42. The average of the last five numbers is 40, and that of the first four numbers is 44. The 6th number is 6 less than the fifth and 5 less than the 7th number. The average of the 5th and the 7th number is:
  • A. 43.5
  • B. 43
  • C. 44.5
  • D. 44
Correct Answer: Option C -
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Explanations:

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