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Ask iit jee aieee pet cbse icse state board community Discussion Response Post to: GP Doubt 1
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[Post New]25 Jan 2008 17:03:32 IST
    Subject: Re:GP Doubt 1
[Up]
elastiboysai (2327)

Blazing goIITian

Olaaa!! Perrrfect answer. 421  [532 rates]
elastiboysai's Avatar
total posts: 573    
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simple
her u go
let da terms be a, ar, ar^2,ar^3 (b=ar, c=ar^2..)
a+ar=3
ar^2+ar^3=12
solvin des u hav
a=1, r=2,
 a=1, b=2, c=4, d=8
so u want
ab+cd/cd-ab
plug in vals.
u get 34/30=17/15
 this reply: 5 points  (with 1 Olaaa!! Perrrfect answer.   in 1 votes )   [?]
 
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