a. A room contains 10 patients with 6 blood pressure patients and 4 diabetic patients. Find the number of ways:

i. A 4 patients can be selected from the room.

ii. A 4 patients with 2 blood pressure and 2 diabetic can be selected from the room.

iii. A 4 patients at least 3 blood pressure can be selected from the room.

c. Three cards are drawn at random from a full pack of cards. Find the probability that

i. The cards are heart

ii. The card are face card.

iii. The three cards are diamond or five

iv. The three cards are club or two