Problem 1. In how many ways can 4 cards of different suits and values be chosen from a full deck (52 cards)? For instance, the combination {40, Q0, K *, 3} satisfies the conditions of the problem, while {50, Qo, K&, 80} or {40, 40, J&, 2 } do not. Justify your answer. Without a proper explanation, your grade will be 0 even if your answer is correct