1.

If a, b, and c are in A.P., p, q, and r are in H.P., and ap, bq, and cr are in G.P., then \[\frac{p}{r}+\frac{r}{p}\]is equal to

A. \[\frac{a}{c}-\frac{c}{a}\]       
B. \[\frac{a}{c}+\frac{c}{a}\]
C. \[\frac{b}{q}+\frac{q}{b}\]      
D. \[\frac{b}{q}-\frac{q}{b}\]
Answer» C. \[\frac{b}{q}+\frac{q}{b}\]      


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