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  9. Q62

TNPSC Group-I 2025 · Question 62 of 66

The average mark of 25 students was found to be 78.4. Later, it was found that score of 96 was misread as 69. Find the correct mean of the marks.

Aptitude - Average

  1. A77.32
  2. B79.48Correct
  3. C78.42
  4. D78.24

Answer: B. 79.48

Explanation

Correct total = 78.4x25 - 69 + 96 = 1987; correct mean = 1987/25 = 79.48.

Source: TNPSC Group-I Prelims 2025 (held 15 June 2025) - official question paper via tnpscinfo.com (Impacteers TNPSC Coaching compilation)

← Q61View full paper (66 questions)Q63 →

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