If the sum of (8, 5 and x) is 21, then the average of (8, 5 and x) is--

গণিত Statistics and Average 07 Oct, 2020

প্রশ্ন If the sum of (8, 5 and x) is 21, then the average of (8, 5 and x) is--

  • ক.
    7
  • খ.
    9
  • গ.
    2
  • ঘ.
    3.5

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