a. Total number of outcomes: "n=10" ;
Favorable outcomes: "m=7" .
Then the wanted probability is
"p = \\frac{m}{n} = \\frac{7}{{10}} = 0.7"
Answer: "p=0.7"
b. Total number of outcomes: "n=10" ;
Favorable outcomes: "m=10-7=3" .
Then the wanted probability is
"p = \\frac{m}{n} = \\frac{3}{{10}} = 0.3"
Answer: "p=0.3"
c. Since there are no students among the students whose favorite drink is neither coca nor fanta, the wanted probability is "p=0" .
Answer: "p=0"
d. Since every student likes either a cook or a fanta, the wanted probability is "p=1" .
Answer: "p=1"
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