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Which of the following values cannot be ...

Which of the following values cannot be a probability of an event?
(a) -0.0001 (b) 0.5 ( c ) 1.001 (d) 1 (e) 20% (f) 0.253 (g) `(1-sqrt(5))/(2)` (h)`(sqrt(3)+(1))/(4)`

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The correct Answer is:
a,c and g cannot be a probability.
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