cards marked with numbers 3, 4, 5, ......, 50 are placed in a box and mixed thoroughly. one card is drawn at random from the box. find the probability that number on the drawn card is (i) divisible by 7. (ii) a number which is a perfect square.
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The no. divisible by 7are 7,14,21,28,35,42,49
favourable outcomes = 7
total possible outcomes = 48
p(getting a no. divisible by 7) = 7/48
perfect squarres are 4,9,16,25,36,49
favourable outcomes = 6
total possible outcomes = 48
p(getting a perfect square) = 6/48
= 1/8
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