If log,, (a +c), logio (c-a), logio (a–2 b+c) are in A.P., then
A) a, b, c are in A.P
B) a^2 ,b^2 ,c^2 are in A.P
C) a,b,c are in G.P.
D) a,b,c are in H.P
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Answer:
D)a,b,c are in H.P
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