Let E be the event that the sum of the numbers is odd. The event E' is: (1,1) (1,3) (1,5) (2,2) (2,4) (2,6) (3,1) (3,3) (3,5) A B (4,2) (4,4) (4,6) {(1,1), (1,3), (1,5), (3,1), (3,3), (3,5), (5,1), (5,3), (5,5)} (5,1) (5,3) (5,5) (6,2) (6,4) (6,6) (1,2) (1,4) (1,6) (2,1) (2,3) (2,5) {(2,2), (2,4), (2,6), (4,2), (4,4), (3,2) (3,4) (3,6) (4,6), (6,2), (6,4), (6,6)} (4,1) (4,3) (4,5) (5,2) (5,4) (5,6) (6.3) (6.5)