When the sum of an A.P. is known, then which are \( (i) \) three (ii) four (iii) five terms : Ta...

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When the sum of an A.P. is known, then which are \( (i) \) three (ii) four (iii) five terms :
Take \( a-3 d, a-d, a+d, a+3 d \)
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