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Combinations

Expert replies
by evansbd » Tue Jul 22, 2008 8:04 am
Help anyone?

How many different points in space given by (x, y, z) are there if coordinates x, y, z are integers such that

-13 < x < 13 , 5 < y < 26 , 3 </ z </ 11

(</ --- less than or equal to)

a) 3,500
b) 3,850
c) 4,500
d) 4,915
e) 5,300
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Source: — Problem Solving |

by arorag » Tue Jul 22, 2008 8:10 am
IMO C
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by pepeprepa » Tue Jul 22, 2008 8:19 am
Just count the number of possible values for x, y and z
x:25
y:20
z:9

25*20*9=4500
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Jeez...

by evansbd » Tue Jul 22, 2008 8:26 am
So this is NOT a combinations problem.....

Thanks for the help...
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