Question

Phil has 19 other students in his math class. During class one day, the teacher asks for a volunteer to come up to the board. If no one volunteered, one would be chosen randomly. If everyone was in the class that day, and the teacher did pick someone at random, what is the probability that the teacher will choose Phil.

Select one:

1/19

19/20

20/1

1/20

Answer 1

1/19

Since there are 19 students in the class, and this is a question of Phil.

Since there is only 1 Phil, it will be 1/19.