a bag contains 3 blue 4 green 5 black marbles if a marble is drawn at random from the bag the probability that marble drawn is not green is
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madhu12487:
whre is the step
options 1 by 3 2 by 3 7 by 12 and 0
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if we called to the marble is not green is p(A) and total result is 3+4+5=12
then probablity of p(A) is blue +black= 3+5 = 8
then p(A) = 8/12= 4/6 = 2/3= 0.666= 0. 67
then probablity of p(A) is blue +black= 3+5 = 8
then p(A) = 8/12= 4/6 = 2/3= 0.666= 0. 67
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