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January 31, 2015

January 31, 2015

Posted by **Shaira** on Thursday, January 3, 2013 at 3:43pm.

- Series and sequences -
**Steve**, Thursday, January 3, 2013 at 6:49pmabc = a^3r^3 = 1000

since 1000 = 10^3, we must have a=2,r=5 or a=5,r=2

Looks like 5,10,20

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