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In a set of 4 terms first three terms are in gp and last three terms are in ap with a common difference 6.first term is equal to last term. Find first term In a set of 4 terms first three terms are in gp and last three terms are in ap with a common difference 6.first term is equal to last term. Find first term
let the terms be a, ar,ar2 , b
r= 1 or r=(-1/2 ) since common difference is 6 , a= ar2 +6 if r=1a=a+6 => 0=6 which is not possible so r cannot be 1 if r=-1/2a=a/4 + 6=> 3a/4 = 6=> a=8 ans is a=8
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