Q1 of 24 Page 97

A probability experiment was conducted. Which of these cannot be considered as a probability of an outcome?

(i) 1/3 (ii) -1/5 (iii) 0.80 (iv) -0.78


(v) 0 (vi) 1.45 (vii) 1 (viii) 33%


(ix) 112%

Probability to its very basics is the ratio of ‘No. of favorable outcomes’ and ‘Total number of outcomes.’

i.e., P =


∴ It cannot be negative as both numerator and denominator are always positive.


Also, it cannot be greater than 1 (∵ number of favorable outcomes is always a subset of total outcome)


Now in this question the values of


(ii) (iv)- 0.78 (vi) 1.45 (ix) 112% are negative or greater than 1.


∴ they are not probability of any event.


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