With two dice, each numbered 16, there are two possible ways to roll a 3.

1st set - dice one has 1 dot, dice two has 2 dots

2nd set - dice one has 2 dots, dice two has 1 dot

Thus, for the outcome of 3 (a particular macrostate), there are 2 microstates.

How many possible ways are there to roll a 4?