$A$ die is thrown. Find the probability of the following event: $A$ number less than $6$ will appear.

Two dice are rolled simultaneously. The probability that the sum of the two numbers on the dice is a prime number is:

$A$ bag contains $3$ red and $5$ black balls and a second bag contains $6$ red and $4$ black balls. $A$ ball is drawn from each bag. The probability that one is red and the other is black is:

$A$ bag contains $9$ discs of which $4$ are red,$3$ are blue and $2$ are yellow. The discs are similar in shape and size. $A$ disc is drawn at random from the bag. Calculate the probability that it will be red. (in $/9$)

In a single throw of two dice,what is the probability of obtaining an odd number as the sum of the numbers on the two dice?

$A$,$B$,$C$ are three horses participating in a race. The probability of horse $A$ to win the race is twice that of horse $B$ and the probability of horse $B$ to win is twice that of horse $C$. Then the probabilities of horses $A$,$B$,and $C$ to win the race are respectively: