A box contains 6 red and 5 blue marbles. Another box contains 5 red and 8 blue marbles. One box is selected at random and from that box, one marble is drawn. What is the probability that the marble drawn is blue?
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Answered by
7
Answer:
Hello mate
Step-by-step explanation:
Probability of selecting a blue ball in 1
st
attempt =
15
5
Probability of selecting a red ball in 2
nd
attempt =
14
6
Probability of selecting a white ball in 3
rd
attempt =
13
4
They can re-arrange themselves in
2!
4!
ways.
Probability =
2!
4!
×
15
5
×
14
6
×
13
4
=
91/48
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