(5) 6. Two fair six-sided dice are tossed independently, and $X_{1}, X_{2}$ are their values. Let $M=\min \left(x_{1}, X_{2} ight)$, i.e. the minimum of two tosses, so $M(2,3)=M(3,2)=2, M(1,5) =1$ a) What is the pmf of $M$ ? b) EM? c) $V(M)$ ? SP.PB.095