there are 7blue balls,8red balls and 5white balls are mixed together are kept in a bag.one has to be taken at random.find the probability that the taken ball is a) a white b)a blue or red c)not a red
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anitasijapatipbwpov:
sry but i can't understand the method so can u plz do this again
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Hi!!!
Sol.Total balls=20balls
a)a white ball
5/20=1/4
b)a red
8/20=2/5
a blue
7/20
c)not red=blue + white
7+5/20
12/20=3/5
HOPE IT HELPS YOU!!
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