# 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20..........+100

2
by Svaishnavsv66

2015-11-10T22:18:28+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A= 1

d = 1

n = 100

Sn = n/2 [2a+(n-1)d]

S100 = 50[2 + 99]

S100 = 50 × 101 = 5050
;) mntn nt
Oo so sweet
Ummm... :)
Lol
:P
2015-11-10T23:44:25+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
A=1          d=1             sn=100
therefore  ,  sn=n/2(2a +(n-1)d)
s100= 50(2*1+99*1)
=50 *101=5050
Thanks
ur wlcm dear
In which class u are