Jane chooses a number X at random from the set of numbers {1,2,3,4}, so that P(X = k) = 1/4 for k = 1,2,3,4.
She then chooses a number Y at random from the subset of numbers {X, ... , 4};
for example, if X = 3, then Y is chosen at random from {3,4}.
(i) Find the joint probability distribution of X and Y and display it in the form of a
two-way table.