A bag contains 7 red balls,9 blue balls and 12 yellow balls.A ball is drawn randomly from the bag . find the probability of getting 1. a yellow ball 2. not a red ball
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Step-by-step explanation:
red ball = 7
blue ball = 9
yellow ball = 12
now total ball in bag = 7+9 +12 =28
1 a yellow ball = 12/28 =3/7
2 not a red ball means blue +yellow
that means 9+ 12 = 21
probability = 21/28 = 3/4
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