A box contains 3 blue, 2 white, and 5 red marbles. If a marble is drawn at random from the box, then what is the probability that the marble will be any one colour?
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No. of blue marbles = 3
No. of red marbles = 5
No. of white marbles = 5
total no. of marbles = 10
Event = 10
therefore,
P(E) = no. of outcomes in which E occurs / n
= 10/10
= 1
Hence , probability will be 1
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