Question #N335
A group of 10 friends are deciding who will drive on a trip. They decide to pick a driver randomly from those who have a valid driver's license. 3 of the friends do not have a valid driver's license. What is the probability that the first friend chosen at random will be a valid driver?
A. 1/3
B. 3/10
C. 7/10
D. 7/3
Correct Answer is: C
Since 3 of the 10 friends do not have a valid driver's license, 7 do have a valid driver's license. Therefore, the probability that the first friend chosen will be a valid driver is 7/10.