Cards number from 1 to 20 are mixed up and then a card is drawn at random.What is the probability that the card drawn has a number which is a multiple of 3 or 5
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multiple of 3.
multiple of 3 possible is 3,6,9,12,15,18.
no of terms in multiple of 3 is 6.
so the answer in 3 is 6/20
multiple of 5.
multiple of 5 possible is 5,10,15,20.
no of terms in multiple of 5 is 4
so the answer in 5 is 4/20.
there fore the answer is 6/20 and 4/20
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