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**jacks****Member**- Registered: 2012-11-21
- Posts: 128

If

are in Geometric Progression. Then prove thatOffline

**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,743

hi jacks

put b = ar and c = ar^2 and substitute in these expressions.

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**jacks****Member**- Registered: 2012-11-21
- Posts: 128

Thanks bobbundy I will try it

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**cool_jessica****Member**- Registered: 2012-06-26
- Posts: 15

put b= an, c= an^2

1/a^3+1/an+1/an^2... similarly...

Finally it would come as 1/a=3/4

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**scientia****Member**- Registered: 2009-11-13
- Posts: 224

Something is wrong here. 1, 1, 1 are in geometric progression (*r* = 1) but

*Last edited by scientia (2012-12-22 11:36:29)*

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