Mathematics
Which of the following cannot be the probability of an event ?
(i)
(ii) 3.8
(iii) 127 %
(iv) -0.8
Probability
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Answer
The probability of an event always lies between 0 and 1. Therefore, any value less than 0 or greater than 1 cannot be the probability of an event.
(i) is between 0 and 1, so it can be a probability.
(ii) 3.8 is greater than 1, so it cannot be a probability.
(iii) 127% is equivalent to 1.27, which is greater than 1, so it cannot be a probability.
(iv) -0.8 is less than 0, so it cannot be a probability.
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