• 25

  • 27

  • 35

  • 30


Given that , The average of five numbers = 27 Total sum of five numbers = 27 ├Ч 5 = 135 If one number is excluded, the average of five numbers = 25 Total sum of four numbers = 25 ├Ч 4 = 100 тИ┤ Required number = 135 тАУ 100 = 35

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