Two marbles are selected at random with replacement.
the probability that both marbles are red in colour is 1/4..
Probability:
Probability multiply helps in visualize the multiple trials involved in a probability situation. The joint and conditional probabilities are easier to see and calculate with the use of the tree.
We have given that,
Number of Red marbles = 5
Number of Green marbles = 3
Number of blue marbles = 2
Total number of marbles = 10
i.e, total possible outcomes for selecting marbles = 10
Two marbles are selected at random with replacement.
we have to calculate probability that both marbles are red.
firstly, we consider that first selected marble is red.
Probability that the first selected marble is red
= 5/10
Then it put again with other marbles i.e with replacement.
second marble is selected from random.
Probability that both marbles are red in colour
= 5/10 ×5/10 = 25/100 = 1/4
Hence, the required probability is 1/4 .
To learn more about probability, refer:
https://brainly.com/question/13604758
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