The probability that both are red marbles is 0.2391
The given parameters are:
Red =12
Blue = 12
Total = 24
The probability of selecting the first red marble :
P(Red) = 12/24
Now, there are 11 red marbles and 23 marbles in all
The probability of selecting the second red marble :
P(Red) = 11/23
The required probability is:
P = 12/24 * 11/23
Evaluate
P = 0.2391
Hence, the probability that both are red marbles is 0.2391
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