What are the outcomes on two 6-sided dice where the first number is less than 4
There are 9 outcomes on two 6-sided dice where the first number is less than 4:
(1,1) (1,2) (1,3)
(2,1) (2,2) (2,3)
(3,1) (3,2) (3,3)
(1,1) (1,2) (1,3)
(2,1) (2,2) (2,3)
(3,1) (3,2) (3,3)