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  4. The probability that a two digit number selected at random will be a multiple of ‘3’ and not a multiple of ‘5’ is

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Q. The probability that a two digit number selected at random will be a multiple of ‘3’ and not a multiple of ‘5’ is

Probability

Solution:

24 out of the 90 two digit numbers are divisible by ‘3’ and not by ‘5’.
The required probability is therefore,
$\frac{24}{90} = \frac{4}{15}$