A bad contains 7red 5 white and 6 black balsa ball is drawn from the bag at random find the probability that the ball drawn is not black
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Answer:
GIVEN : Number of red balls = 7
Number of white balls = 3
Number of black balls = 5
Total number of balls in a bag = 7 + 3 + 5 = 15
Total number of outcomes = 15
(i) Let E1 = Event of selecting that a ball drawn is red
Number of red balls = 7
Number of outcome favourable to E = 7
Probability (E1) = Number of favourable outcomes / Total number of outcomes
P(E1) = 7/15
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