# What is the probability that a no.being picked from 1-100 is divisible by 3 but not by 9

We know Probability P ( E ) =
Here two dice are thrown simultaneously .
So,
Total number of events n ( S ) = 100

1 ) Getting a  number divisible by 3 but not by 9 ,  We get combination  = { 3 ,  6 ,  12 , 15 ,  21  , 24 ,  30 , 33 , 39 , 42 , 48 , 51 , 57 , 60 , 66 , 69 , 75 , 78 , 84 , 87 , 93 , 96 }

Total  number of combinations  =  22

n ( E ) = 22

So,
Probability of getting a number divisible by 3 but not by 9 =

• 0
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