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प्रश्न
There are 30 tickets numbered from 1 to 30 in the box and a ticket is drawn at random. If A is the event that the number on the ticket is a perfect square, then write the sample space S, n(S), the event A and n(A).
उत्तर
Since there are 30 tickets numbered from 1 to 30.
∴ sample space
S = { 1,2,3,.....30}
n(S) =30
Let A = Event of Square
perfect square
∴ A = { 1, 4,9,16,25}
∴ n (A) = 5
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