If two dice are thrown simultaneously,then the probability that $1$ comes on the first die is:

An urn contains $10$ green,$12$ yellow,and $11$ white balls. What is the probability that when $2$ balls are selected,at least one is white?

What is the chance that a leap year selected randomly will have $53$ Wednesdays?

$A$ bag contains $3$ white and $7$ red balls. If a ball is drawn at random,what is the probability that the drawn ball is either white or red?

$A$ can hit a target $4$ times in $5$ shots,$B$ can hit a target $3$ times in $4$ shots,and $C$ can hit a target $2$ times in $3$ shots. All three fire a shot each. What is the probability that at least two shots hit the target?

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