Originally Posted by

**da`** Struggling here with this question would really appreciate and be very thankful for any help. It seems really general to me and clearly don't have a knack for this, and just need to understand how create a probability function.

Quote:

Two cards are picked from a bag containing 10 cards numbered 0,1,2,.....,9. Let X be the larger number of the two cards and let Y be their total.

Find the probability function of X and the probability function of Y, if sampling is __without__ replacement.

Find the probability function of X and the probability function of Y, if sampling is __with__ replacement.