SOLUTION: A pair of fair dice is tossed. Determine the probability that at least one die shows a 2 or a 3.

Below are all 36 possible rolls of a pair of dice.
The red ones show at least one 2 or 3.  There are 20
of them so the probability of a red one is 20 out of 
36, or  which reduces to :


(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)

(2,1) (2,2) (2,3) (2,4) (2,5) (2,6) 

(3,1) (3,2) (3,3) (3,4) (3,5) (3,6) 

(4,1) (4,2) (4,3) (4,4) (4,5) (4,6) 

(5,1) (5,2) (5,3) (5,4) (5,5) (5,6) 

(6,1) (6,2) (6,3) (6,4) (6,5) (6,6) 

Edwin