Multiple choice general knowledge math & puzzles

The average of “6” consecutive numbers is 9.5. Then what is the average of last “3” integers.

  1. 10.5

  2. 9.5

  3. 10

  4. 11

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D Correct answer
Explanation

If the average of 6 consecutive numbers is 9.5, the numbers are 7, 8, 9, 10, 11, 12. The last three integers are 10, 11, and 12. Their average is (10+11+12)/3 = 11.