Solved UPSC CDS/OTA Question
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Q · Statistics Moderate · 45s
Find the harmonic mean of 2, 4, and 8.
TopicStatistics
Question Typemultiple choice
DifficultyModerate
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
HM = 3 / (1/2 + 1/4 + 1/8) = 3.43.
Final Answer: Option C - 3.43