The average of 11 consecutive numbers is n. If the next two numbers are also included, the average will.

The average of 11 consecutive numbers is n. If the next two numbers are also included, the average will.

• A. increase by 1
  
• B. remain the same
• C. increase by 1.4
  
• D. increase by 2

 

The correct answer is option A. increase by 1. Can you explain this answer in the comments?

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