1.There are 4 suits (heart, diamond, clover, and spade) in a 52-card deck, and each suit has 13 cards.Suppose your experiment is to draw one card from a deck and observe what suit it is.

a.Find the probability of drawing a heart.

b.Find the probability of drawing a heart or clover.

c.Find the probability that the card is not a diamond.

2.There are 2 white balls and 8 red balls in an urn.

a.Two balls are selected from the urn without replacement, what is the probability of getting 1 white ball in the first selection and 1 red ball in the second selection?

b.If the selection is with replacement, what is the probability of getting 1 white ball in the first selection and 1 red ball in the second selection?

3.A businessman has eight suits.He plans to pack three of the eight suits for his business trip to Paris.

a.Does the order matter when he chooses the three suits?

b.Based on your answer to part (a), should we use permutation or combination to find the different ways that he can choose the three suits?

c.How many different ways can the three suits be chosen?