If p,q,r on AP then find value of p-q/q-r

1.	If p,q,r on AP then find value of p-q/q-r
Answer» Given: p, q & r in AP.To Find: p-q/q-rSolution:Since p,q and r are in AP.Therefore difference must be equal.(p-q )=(q-r) ;(p-q)/(q-r)=1.Thus, answer is 1.

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