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Question

In a survey of 100 ladies it was found that 36 like coffee while 64 dislike it.
Out of these ladies, one is chosen at random. What is the probability that the chosen lady (i) likes coffee, (ii) dislikes coffee?

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Solution

Total number of ladies surveyed = 100
Ladies who like coffee = 36
Ladies who do not like coffee = 64

(i) Probability of choosing a lady who likes coffee=Number of ladies who like coffeeTotal number of ladies =36100=925(ii) Probability of choosing a lady who dislikes coffee=Number of ladies who dislike coffeeTotal number of ladies =64100=1625

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