if x=-23+22+(-23)+22+...40 terms & y=11+(-10)+11+(-10)+...20 terms the – InterviewSolution

1.

if x=-23+22+(-23)+22+...40 terms & y=11+(-10)+11+(-10)+...20 terms then find y-x

Answer»

the easy way_23×40=-920,22×40=880x=-920+880x=-40similarly y=220-200y=20y-x=20+4060

60 is the answer of this question

60 is correct answer

-23×40=-920; 22x40=880;x=-920+880=-40; y=220-200=20;; y-x=20+40=60;

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