SOLUTION: The probability that in the toss dice we obtain the sum 7 or 11 is

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Question 1043409: The probability that in the toss dice we obtain the sum 7 or 11 is
Found 2 solutions by Boreal, Edwin McCravy:
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
It is (6/36)+(2/36)=(8/36)=(2/9)
The dice can be
2:1/36
3: 2 ways
4:3 ways
5: 4 ways
6: 5 ways
7: 6 ways--1/6,2/5,3/4,4/3,5/2,6/1
8: 5 ways
9:4 ways
10: 3 ways
11: 2 ways
12: 1 way
Answer by Edwin McCravy(20060)   (Show Source): You can put this solution on YOUR website!
Here are all 36 possible rolls with the 7's and 11's 
in red:  



(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) 

Count 'em!  There are 8 red ones, so that's 8 out of 36,
or a probability of  which reduces to .

Edwin
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