Two dice are thrown. Find the probability of getting at least one of the two numbers as $4$.

Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?

Two dice are tossed. The probability that the total score is a prime number is

$A$ bag contains $4$ white,$5$ red,and $6$ green balls. Three balls are picked up randomly. The probability that a white,a red,and a green ball is drawn is

One card is drawn from a pack of $52$ cards. The probability that it is a king or a diamond is

$A$ bag contains $4$ white balls and $2$ black balls. Another bag contains $3$ white balls and $5$ black balls. If one ball is drawn from each bag,then the probability that both the balls are black,is