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if the +ve numbers a , b, c are in AP and a^2 , b^2 , c^2 are in harmonic progression,then
b. b = 3a +c
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AP=Arithmetic Progressoin ?
looks like A
when a=b=c: a,a,a is an arithmetic progression and a^2,a^2,a^2 is in harmonic progression (special case when all values are the same)
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