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PLEASE HELP ME GUYS!!
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PLEASE HELP ME GUYS!!

PLEASE HELP ME GUYS!!-example-1
User MCKapur
by
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1 Answer

4 votes

Answer:

n=20

Explanation:


S_(n) =(n(a_(1)+a_(n)))/(2)\\\\1260 =(n(25+101))/(2) \\\\n = 20

User Emilio Garavaglia
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