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23 August, 17:32

A jar contains 10 red marbles and 30 blue marbles. what is the probability of randomly selecting a red marble from the jar?

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  1. 23 August, 17:45
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    Answer : 1/4 Total number of marbles = 40 number of red marbles = 10 Probability of an event = Number of favorable events / Total number of events Probability of getting a red marble = 10C1/40C1 = 10/40 = 1/4 or 25%
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