Tara is registering for a physics 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 math class If Tara requests an afternoon class what is the probability that she will be assigned Mrs David for 5th period 4th 6th Williams Brown Davis mu 1st X Y 2nd X X X 3rd X X X X X 5th X X X X X