At the coffee kiosk at the mall there are 8 coffee drinks 5

At the coffee kiosk at the mall, there are 8 coffee drinks, 5 tea drinks, and 2 smoothies. Nora wants to buy 3 drinks for herself and her friends. Find the probability that she buys:

a) all coffee drinks

b) two smoothie drinks

c) all tea drinks

d) one of each type of drink

e) 2 coffee drinks and 1 tea drink

Solution

At the coffee kiosk at the mall, there are 8 coffee drinks, 5 tea drinks, and 2 smoothies. Nora wants to buy 3 drinks for herself and her friends. Find the probability that she buys:

Total drinks =8+5+2=15

p=8/15 =0.5333

P=2/15 = 0.1333

P=5/15 =0.3333

P= 1/8+1/5+1/2= 0.825

P=2/8 +1/5 = 0.45