The numbers on a six sided die are: 1, 2, 3, 4 ,5 ,6
There are 4 numbers that are either equal to 3 or greater than 3: 3, 4, 5 ,6
The probability of getting one is 4 chances out of 6 numbers, which is written as 4/6.
4/6 can be reduced to 2/3 ( simplified fraction)