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If the 4th,10th and 16th terms …

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If the 4th,10th and 16th terms of a g.p.are x,y and z, respectively.prove that x,y,z are i. g.p.

Posted by Kartikey Pal 5 years, 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Hitesh Kumar 5 years, 7 months ago

Let G.P be a,ar,ar^2..... So 4 th term is ar^3 10 th term is ar^9 16 th term is ar^15 Now L.H.S (ar^15)/(ar^9)=r^6 R.H.S (ar^9)/(ar^3)=r^6 So L.H.S=R.H.S

4Thank You

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CBSE > Class 11 > Mathematics