When calculating probability, you are comparing the number of positive outcomes to the number of possible outcomes.
P=Positive Outcomes/Possible OutcomesWe want a number less than 4 to occur on the cube. Because there are numbers from 1 to 6 on the cube, only numbers 1, 2, and 3 are less than 4, so the number of positive outcomes is equal to 3. The number of possible outcomes is the number of the sides of the cube.
Positive:&3
Possible:&6
Let's form our ratio and then simplify it as much as possible.
