Question

a survey of 250 boys of a school was conducted and it was found that 110 Like coffee and 140 do not like coffee. out these boy, one boy is selected at random. what is the probability that the selected boy :(1) like coffee (2) does not like coffee.

Answer 1

FO stands for Favorable outcomes
TO stands for total outcomes.

Answer 2

1) n(e) = 110
N(s) = 250
P(e) = n(e) /n(s)
P(e) = 110/250 i.e 11/25

2) Does not link coffee
N(e) = 140
N(s) = 250
Therefore p(e) = 140/250
i.e 14/25
Here n(e) is the number of event n(s) is the number of sample space or may be said as total number of event and p(e) refers to the probability of event

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