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Probability of Random Selection

Please help me solve this problem and explain how you get to the answer. Thank you.

A local dealership currently has 36 used GM, Ford, and Toyota vehicles on the lot. The following data are available:
- Twenty six vehicles are cars
- Eleven vehicles are GM
- Fifteen vehicles are Fords
- Three vehicles are both Toyotas and trucks
- Fourteen vehicles are both Fords and cars

a) What is the probability that a randomly selected vehicle is a Toyota? (3 decimal places.)
b) What is the probability that a randomly selected vehicle is a truck? (3 decimal places.)
c) What is the probability that a randomly selected vehicle is either a Ford or a car? (3 decimal places.)
d) What is the probability that a randomly selected vehicle is a GM truck? (3 decimal places.)
e) What is the probability that a randomly selected vehicle is a Toyota given that it is a car? 93 decimal places.)
f) What is the probability that a randomly selected vehicle is a truck, given that it is a Ford? (3 decimal places.)

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