(1) Three dice are throiwn simultaneously.The probability that $\displaystyle 4$ has appeared on two dice given that $\displaystyle 5$ has occured on one dice.

(2) An ordinary cube has $\displaystyle 4$ blank faces, one face marked $\displaystyle 2$ and other face marked $\displaystyle 3$. The probability of obtaining $\displaystyle 12$ in $\displaystyle 5$ throws in