The probabilities of occurrence of two events are respectively $0.21$ and $0.49$. The probability that both occur simultaneously is $0.16$. Then the probability that none of the two occurs is

Statement $- I :$ If the probabilities of solving a problem by $A$ and $B$ are $1/3$ and $1/4$ respectively,then the probability that the problem is solved is $7/12$.
Statement $- II :$ The events described above are independent events.

If one card is drawn at random from a pack of $52$ cards,what is the probability that it is a king or a spade?

If $A$ and $B$ are two events in a random experiment such that $P(A) + P(B) = 2 P(A \cap B)$, then:

Find the favorable odds in favor of drawing a king from a well-shuffled deck of $52$ cards.

If ${A_1}, {A_2}, ..., {A_n}$ are any $n$ events,then: