Menu Close

Find-the-sum-of-the-series-below-1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-3020-

Tinku Tara 0 Comments
Pin




Question Number 86088 by Serlea last updated on 27/Mar/20
Find the sum of the series below: 1+2+3−4−5−6+7+8+9−10−11−12+13+14+15...−3020
Findthesumoftheseriesbelow:1+2+3−4−5−6+7+8+9−10−11−12+13+14+15…−3020
Commented by Kunal12588 last updated on 27/Mar/20
did yoy forgot 10? I think series should be like 1+2+3−4−5−6+7+8+9−10−11−12+13+...+3020
didyoyforgot10?Ithinkseriesshouldbelike1+2+3−4−5−6+7+8+9−10−11−12+13+…+3020
Commented by Serlea last updated on 27/Mar/20
Merci
Merci
Commented by Prithwish Sen 1 last updated on 27/Mar/20
I think rhe question is 1+2+3−4−5−6+7+8+9−10−11−12...... −3016−3017−3018 =(1−4)+(2−5)+(3−6)+......(3013−3016) +(3014−3017)+(3015−3018) =(−3)×1509 = −4527 please check.
Ithinkrhequestionis1+2+3−4−5−6+7+8+9−10−11−12……−3016−3017−3018=(1−4)+(2−5)+(3−6)+……(3013−3016)+(3014−3017)+(3015−3018)=(−3)×1509=−4527pleasecheck.
Commented by Kunal12588 last updated on 28/Mar/20
see sir next term would be ...+(3−6)+(4−7)+(5−8)+... and these terms are not needed
seesirnexttermwouldbe…+(3−6)+(4−7)+(5−8)+…andthesetermsarenotneeded
Commented by Prithwish Sen 1 last updated on 28/Mar/20
I think you are making a mistake , actually it is (1−4)+(2−5)+(3−6)+(7−10)+(8−11)+ (9−12)+(13−16)+(14−17)+(15−18)+.. amd so on. look here nothing is repeated. You have to take six numbers as a group like 1+2+3−4−5−6 then 7+8+9−10−11−12 then 13+14+15−16−17−18 and so on.
Ithinkyouaremakingamistake,actuallyitis(1−4)+(2−5)+(3−6)+(7−10)+(8−11)+(9−12)+(13−16)+(14−17)+(15−18)+..amdsoon.lookherenothingisrepeated.Youhavetotakesixnumbersasagrouplike1+2+3−4−5−6then7+8+9−10−11−12then13+14+15−16−17−18andsoon.

Pin

Leave a Reply

Your email address will not be published. Required fields are marked *