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A basket contains 4 red, 5 blue, and 3 green marbles. If three marbles are picked at random, what is the probability that either all are green or all are red?
Correct Answer: (c)
Official keyThis question appeared in the GPSC Prelims 2024 examination (GS). It is Question 191 out of 200 questions in this paper.
This question was part of the GPSC Prelims 2024 (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.