Question

Help : Conditional Probability
A fair cubical die is rolled.
Event A : obtaining a score of less than 4
Event B : obtaining a factor of 30 Find
1) p(A|B)
2) p(B|A)

Answer 1

obtaining a score less than 4 => ( 1 , 2 , 3 )
obtaining a factor of 30 => ( 5, 6 )
1) p (A|B) = ???