A bag contains 5 red balls , 8 white balls, 4 green balls and 7 black balls. If one ball is drawn at random. Find the probability that it is (a) Black (b) Red (c) not green.
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Step-by-step explanation:
In the bag,
number of red balls=5
number of white balls=8
number of green balls=4
number of black balls = 7
:: Total number of balls in the bag = 5 + 8 + 4 + 7 =
24
(i) Number of black s=7
.. Probability that the ball drawn is black
7
24
(ii) Number of balls that are not green
= 5 + 8 + 7 = 20
:. Probability that the ball drawn is not green
unlo
= 20 = 5/²2
24
6
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