Find the coordinates of the mid-point of the line segment joining the following points: (i) \( A...

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Find the coordinates of the mid-point of the line segment joining the following points:
(i) \( A(4,0) \) and \( B\left(-\frac{7}{2}, 0\right) \)
(ii) \( P(p+q, q+r) \) and \( Q(p-q, r-q) \)
(iii) \( M(-7,-4) \) and \( N(1,6) \)
(iv) \( R(3,-4) \) and \( S(-7,8) \)
\( (v) C(0, c) \) and \( D(0, d) \)
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