8. If we throw a dice , what is the box, probability of obtaining a result that is less than 4 . If we know that the result obtained was an even number?
We have, A is the set of numbers less than 4 = {1,2,3}
B is the set of even numbers = {2,4,6}
∴ A∩B = {2}
Now, P(A/B) =P(A∩B)/P(B) = 1/3
We have, A is the set of numbers less than 4 = {1,2,3}
B is the set of even numbers = {2,4,6}
∴ A∩B = {2}
Now, P(A/B) =P(A∩B)/P(B) = 1/3