1.

If \[{{p}^{th}},\ {{q}^{th}},\ {{r}^{th}}\] and \[{{s}^{th}}\] terms of an A.P. be in G.P., then \[(p-q),\ (q-r),\ (r-s)\] will be in [MP PET 1993]

A. G.P.
B. A.P.
C. H.P.
D. None of these
Answer» B. A.P.


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