Using a fair, six-sided die, what is P (2 or 3) ?

Answer: 2/6

With a fair 6 sided die there is a total of 6 outcomes 2 and three being one of those. There's a 1/6 chance of getting a 2 and 1/6 chance of getting a 3.

1+1=2

So the probably of getting a 2 or 3 is 2/6 or simplified 1/3