If the probability for A to fail in an examination is 0.2 and that for B is 0.3 , then the proba...

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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) \( 0.5 \)
(b) 0.5
(c) \( \leq 0.5 \)
(d) 0
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