Mark, Tom, and Travis fit in the backseat of the car. If they enter the car in a random order, what is the probability that Mark will be in the middle?

A 1/3
B 1/6
C 1/2
D 2/9

Respuesta :

1/3

mark     tom    travis
tom       travis mark
travis   mark tom

how many boys 3
how many total  9

3/9 = 1/3