A) A.P.
B) G.P.
C) H.P.
D) None of these
Correct Answer: A
Solution :
\[a,\ b,\ c\] are in A.P. \[\Rightarrow \frac{1}{bc},\ \frac{1}{ca},\ \frac{1}{ab}\] will be in A.P. {Dividing each term by\[abc\]}
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