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The sum of 30 observations is 910. If one of the observations is taken as –25 instead of 25, find the correct mean.
Correct Answer: (c)
Official keyThis question appeared in the GPSC Prelims 2026 examination (GS). It is Question 150 out of 200 questions in this paper.
This question was part of the GPSC Prelims 2026 (GS). The GPSC Prelims examination tests candidates on general studies, current affairs, and aptitude through multiple-choice questions.
Practice previous year questions from all GPSC Prelims papers and compare patterns with UPSC Prelims PYQ to identify overlapping topics.