Question

a bag contains 24 balls of which 4 are red 8 are white and rest are blue. A ball is selected at random. what is the probability that the ball is drawn . 1. not white 2.white or blue

Answer 1

total outcome=24
red balls=4
white balls=8
therefore,blue balls are 24-(8+4)=24-12=12
E:not white=12+4=16
n(E)=16
1. p(E)=16/24=2/3
2.total outcome of white or blue is 20
therefore probability is 20/24=5/6

Answer 2

Red balls=4
White balls=8
Blue balls=12
(i)not white
Total outcomes =24
Favorable outcomes =16
P(E)=16/24=2/3
(ii) white or blue
Total outcomes =24
Favorable outcomes =20
P(E) =20/24=5/6

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