Question 1135112
Assume you are rolling two​ dice; the first one is​ red, and the second is green.
Use a systematic listing to determine the number of ways you can roll a total less
than 10 on the two dice.
<pre>Here is a systematic way to arrange all 36 rolls in an array. The purplish-
blue rolls total less than 10 and the light bluish green ones total 10 or more
 <font color="indigo"><b>

(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)</font></b> 
 
<font color="indigo"><b>(4,1) (4,2) (4,3) (4,4) (4,5)</font></b> <font color="cyan"><b>(4,6)</b></font> 
 
<font color="indigo"><b>(5,1) (5,2) (5,3) (5,4)</font></b><font color="cyan"><b> (5,5) (5,6)
 
<font color="indigo"><b>(6,1) (6,2) (6,3)</font></b><font color="cyan"><b> (6,4) (6,5) (6,6)</pre></b></font></font></font>
<pre>
Count the purplish-blue ones. There are 30. 

Edwin</pre>