If l, m, and n are the pth, qth, and rth terms of an Arithmetic Progression (A.P.) respectively, what is the value of the expression p(m-n) + q(n-l) + r(l-m)?

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If l, m, and n are the pth, qth, and rth terms of an Ar... | Mathematics MCQ #40 | Examora | Examora