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प्रश्न
A box contains cards numbered 6 to 55. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square, is ______.
पर्याय
`7/50`
`7/55`
`1/10`
`5/49`
MCQ
रिकाम्या जागा भरा
उत्तर
A box contains cards numbered 6 to 55. A card is drawn at random from the box. The probability that the drawn card has a number which is a perfect square, is `bbunderline(1/10)`.
Explanation:
Given, A box contains cards numbered 6 to 55. Perfect square number are = 9, 16, 25, 36, 49
S = {6, 7, 8.....55},
n(S) = 50
A = {9, 16, 25, 36, 49}
n(A) = 5
⇒ P(A) = `5/50 = 1/10`
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