What is the probability of rolling a 6 sided die and getting a 4 or a number divisible by 3. a) 1/3 b) 1/18 c) 2/3 d) 1/2

Let 
Event A = rolling a 4 on a single die
Event B = rolling a number divisible by 3 (3 or 6) on a single die

There are three outcomes possible in total if either event A happens or event B happens. This is out of six outcomes total.

Divide the values and reduce: 3/6 = 1/2

Final Choice D) 1/2