Q18 of 66 Page 15

Cards marked with number 3, 4, 5, …, 50 are placed in a box and mixed thoroughly. A card is drawn at random from the box. Find the probability that the selected card bears a perfect square number.[CBSE 2016]

It is given in the question that,

Total number of cards = 48


Now, cards having perfect square number are 4, 9, 16, 25, 36, 49 = 6 cards


∴ Probability of having a perfect square number =



Hence, probability of having a perfect square number is

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