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The seventh term of a G.P. …

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The seventh term of a G.P. is 8 times the fourth term and 5th term is 48.Find the G.P.

Posted by Arpit Varma 7 months ago

CBSE > Class 11 > Mathematics

1 answers

Tanvi Garg 7 months ago

a7=8(a4)....…(1) a5=48.....(2) From eq (1). ar^6=8(ar^3) ar^6/ar^3=8 r^3=8 r=2 From eq (2) ar4=a(2)^4 a(16)=48 a=48/16 a=3 Therefore a=3,,r=2 then G.P is 3,6,12,24,48....

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