List of top Mathematics Questions on Statistics and Probability

When two coins are tossed, what is the probability of at most two heads?
Two cards are drawn at random and without replacement from a pack of 52 playing cards. Find the probability that both the cards are black.
If A + B are independent events, P(A \cup B) is equal to
The median of the given data is
89, 45, 56, 67, 89, 45, 78, 45, 78, 45, 67
The average of the squares of the first 50 natural numbers is