You roll a standard number cube. find p(number greater than 2).

A standard number cube goes from 1 to 6. Since we are looking for P, the probability of a number greater than 2, we will count how many numbers on the dice are greater than 2.
3, 4, 5, 6. There is 4 numbers out of 6 total.
Your probability is 4/6 or 2/3 if simplified.
I hope this helps!