(1)/(20)+(1)/(30)+(1)/(42)+(1)/(56)+(1)/(72)+(1)/(90)+(1)/(110)+(1)/(1 – InterviewSolution

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1.	(1)/(20)+(1)/(30)+(1)/(42)+(1)/(56)+(1)/(72)+(1)/(90)+(1)/(110)+(1)/(132)=?
Answer» `(1)/(8)` `(1)/(7)` `(1)/(6)` `(1)/(10)` ANSWER :C

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