What are the odds in favour of getting sum as multiple of 3, when a pair of dice is thrown?

What is the probability of getting 'sum of 9' twice in 6 tosses of a pair of dice.

A fair die is thrown, then the odds in favour of getting a number which is a perfect square in uppermost face of a die is

A die is thrown, then write the sample space (S) and number of sample points n(S) and also write event A of getting numbers multiple of 3 on the upper face and write n(A).

The odds against John solving a problem are 4 to 3 and the odds in favour of Rafi solving the same problem are 7 to 5. What is the chance that the problem is solved when both of them try it?

In a horse race the odds in favour of these horse are 1:2, 1:3 and 1:4.The probability that one of the horse will win the race is

In solving any problem, odds against A are 4 to 3 and in favour of B in solving the same is 7 to 5. The probability that problem will be solved is