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The p^(th), q^(th) and r^(th) terms of ...

The` p^(th), q^(th) and r^(th)` terms of an A.P. are a, b, c, respectively. Show that `(q-r) a+(r-p) b+(p-q)c = 0 `

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KUMAR PRAKASHAN-SEQUENCE AND SERIES-Miscellaneous Exercise
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