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प्रश्न
A box conatins cards numbered 6 to 50. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square is
विकल्प
`1/45`
`2/15`
`4/45`
`1/9`
उत्तर
Total number of outcomes = 45.
Out of the given numbers, perfect square numbers are 9, 16, 25, 36 and 49.
Numbers of favourable outcomes = 5.
∴ P(getting a number which is a perfect square) = `("Number of favourable outcomes")/"Number of all possible outcomes"`
`= 5/45 = 1/9`
Thus, the probability that the drawn card has a number which is a perfect square is `1/9`.
Hence, the correct answer is option (d).
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