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There are 30 cards, of same size, in a...

There are 30 cards, of same size, in a bag on which numbers 1 to 30 are written. One card is taken out of the bag at random. Find the probability that the number on the selected card is not divisible by 3.
(a) `1/3`
(b) `2/3`
(c) `1/5`
(d) `2/5`
Answer - `2/3`

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