Find the sum of the following arithmetic progressions: (i) \( 50,46,42, \ldots \) to 10 terms (i...

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Find the sum of the following arithmetic progressions:
(i) \( 50,46,42, \ldots \) to 10 terms
(ii) \( 1,3,5,7, \ldots \) to 12 terms
(W)
(iii) \( 3,9 / 2,6,15 / 2, \ldots \) to 25 terms
(iv) \( 41,36,31, \ldots \) to 12 terms
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