McKenna is registering for history class The morning classes are 1st 2nd and 3rd periods and the afternoon classes are 4th 5th and 6th periods Below is a table of teachers and the periods they teach the history class If McKenna requests an afternoon class what is the probability that she is assigned Mrs Wilson 1st 4th 6th Perry King Johnson Wilson 2 15 X X X 2nd X X X 3rd X X X X 5th X X X X X