Three coins are tossed once. Find the probability of getting at most $2$ heads.

If $A$ and $B$ are two events of a random experiment such that $P(A \cup B) = P(A \cap B)$,then which one amongst the following four options is not true?

Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three persons apply for the same house is

When a die is thrown twice,what is the probability of getting $4, 5,$ or $6$ on the first throw and $1, 2, 3,$ or $4$ on the second throw?

$A$ number is chosen at random from the first ten natural numbers. The probability that the number is odd and a perfect square is

Check whether the following probabilities $P(A) = 0.5$,$P(B) = 0.4$,and $P(A \cup B) = 0.8$ are consistently defined.