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Find the average of 15, 21, and 18?
  1. 18
  2. 20
  3. 22
  4. None of these
Explanation

Average = Sum of all numbers / Total number of numbers

Given numbers: 15, 21, 18

Total number of numbers = 3

Sum = 15 + 21 + 18 = 54

Average = 54 / 3 = 18


Last verified on 24-08-2026

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