Desmond is rolling a standard six-sided number cube. He plans to roll it $72$ times.  

1. About how many times would you expect Desmond to roll a $4$? Why?

   Hint (a):

   You would expect Desmond to roll a $4$ about one sixth of the total rolls, $72$, since there are $6$ numbers on a cube. What is one sixth of $72$?

2. About how many times would you expect him to roll an even number? Why?

   Hint (b):

   See part (a).

   More Help (b):

   There are three even numbers on a cube.