Multiple choice

The average of 5 numbers is 29. If one number is excluded, the average becomes 27. Find the excluded number?

  1. 37

  2. 67

  3. 68

  4. 57

  5. None of these
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A Correct answer
Explanation

Sum of 5 numbers = 5 × 29 = 145. When one number is excluded, sum of remaining 4 = 4 × 27 = 108. Excluded number = 145 - 108 = 37.

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