Let A and B are two mutually exclusive events with $$P(A) = {1 \over 3}$$ and $$P(B) = {1 \over 4}$$. What is the value of $$P(\overline A \cap \overline B )$$ ?

The mean and standard deviation of a binomial distribution are 12 and 2 respectively. What is the number of trials ?

If two dice are thrown and at least one of the dice shows 5, then the probability that the sum is 10 or more is

Let A, B and C be three mutually exclusive and exhaustive events associated with a random experiment. If P(B) = 1.5 P(A) and P(C) = 0.5 P(B), then P(A) is equal to