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11TH · MATH

Question 6

menu_bookSolutionmenu_bookTheorymenu_book•(i)3+5−7+9+11−13+15+17−19+⋯3 + 5 - 7 + 9 + 11 - 13 + 15 + 17 - 19 + \cdots3+5−7+9+11−13+15+17−19+⋯to $3n$ terms.menu_book•(ii)1+4−7+10+13−16+19+22−25+⋯1 + 4 - 7 + 10 + 13 - 16 + 19 + 22 - 25 + \cdots1+4−7+10+13−16+19+22−25+⋯to $3n$ terms.
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11TH · MATH

Question 6

menu_bookSolutionmenu_bookTheorymenu_book•(i)3+5−7+9+11−13+15+17−19+⋯3 + 5 - 7 + 9 + 11 - 13 + 15 + 17 - 19 + \cdots3+5−7+9+11−13+15+17−19+⋯to $3n$ terms.menu_book•(ii)1+4−7+10+13−16+19+22−25+⋯1 + 4 - 7 + 10 + 13 - 16 + 19 + 22 - 25 + \cdots1+4−7+10+13−16+19+22−25+⋯to $3n$ terms.
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