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There are 10 marbles in a box which are ...

There are 10 marbles in a box which are marked with the distinct numbers from 1 to 10. If a marble is drawn, then what is the probability of getting prime numbered marble ?

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Number of prime numbered marbles `=4` (i.e., 2, 3, 5, 7)
Total marbles `=10`
`:.` The probability of getting a prime numbered marble
`=4/10=2/5`
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