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and please show what test you used for each question

can someone please answers the questions A,B,C step by step please showing facts and theorems. (Updated) -Determine whether t
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01 © -42 (Divergent) 3027 Un= -4n². Let 30²71 mooo 37 +1 m2 - to Llimden 70 ; Necemary Condition for Convergence of a series1 © Ž V ( Convergent) ay ng we know that i to is Cowergent P72. the a 1.414 is clearly fu414 nal

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and please show what test you used for each question can someone please answers the questions...
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