Discussion
From a set of 17 cards, numbered 1, 2, …. 17, one card is drawn. What is the probability that the number is a multiple of 3 or 7?
Answer: B
The total number of possible outcomes is 17
The number of favourable outcomes is 3, 6, 7, 9, 12, 14 and 15
= 7
Thus, the required probability = number of favourable outcomes/ total number of outcomes
= 7/17.
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