If \( a, b, c \) are in A.P., p, q, r are in H.P. and ap, bq, \( c ...

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If \( a, b, c \) are in A.P., p, q, r are in H.P. and ap, bq, \( c r \) are in G.P., then find \( \frac{p}{r}+\frac{r}{p} \).
\( \mathrm{P} \)
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