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प्रश्न
An experiment has four possible outcomes A, B, C and D, that are mutually exclusive. Explain why the following assignments of probabilities are not permissible:
P(A) = 0.12, P(B) = 0.63, P(C) = 0.45, P(D) = – 0.20
बेरीज
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उत्तर
Since P(D) = – 0.20
This is not possible as 0 ≤ P(A) ≤ 1 for any event A.
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