SOLUTION: How many ordered triples (x,y,z)) satisfy x^2 + y^2 +z^2 < 4 where x,y,z are integers a. 7 b. 13 c. 19 d. 27 e. 31

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Question 252287: How many ordered triples (x,y,z)) satisfy x^2 + y^2 +z^2 < 4 where x,y,z are integers
a. 7 b. 13 c. 19 d. 27 e. 31
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There's
0 0 0
-------
1 0 0
0 1 0
0 0 1
------
-1 0 0
0 -1 0
0 0 -1
-------
That's 7.