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January 26, 2015

January 26, 2015

Posted by **ELIJAH HAVA** on Sunday, April 28, 2013 at 2:27am.

- maths -
**Reiny**, Sunday, April 28, 2013 at 5:49am1 , r , r^2 , r^3 , 81

so r/1 = 81/r^3

r^4 = 81

r = ± 3

the 3 geometric means could be

3, 9 , and 27

or

-3 , 9, and -27

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