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[" 20.If the probability for A to fail i...

[" 20.If the probability for A to fail in an examination is "0.2" and that for "B" is "0.3" ,then the "],[" probability that either "A" or "B" fails is ".....],[[" (a) "0.38," (b) "0.44," (c) "0.50," (d) "0.94]]

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