A survey of 200 people was conduct about their preference of visiting various

A survey of 200 people was conduct about their preference of visiting various pavilions.
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Find the probability that selected person visited
(i) both good living and Delhi pavilion.
(ii)only defence pavilion.
(iii)only toy pavilion.
(iv)both toy and defence pavilion.

∵ Total numbers of people = 200
∴ Total numbers of trial = 200
(i) Let E1 be the event of selected person visited both good living and Delhi pavilion.
Then, the number of trial in which E, happened = 95+45 = 140
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(ii) Let E2 be the event of selected person visited only defence pavilion.
Then, the number of trials in which E2 happened = 20
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(iii) Let E3 be the event of selected person visited only toy pavilion.
Then, the number of trials in which E3 happened = 40
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(iv)Let E4 be the event of selected person visited both toy and defence pavilion.
Then, the number of trials in which E4 happened = 40 + 20 = 60
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