Câu này con thấy đc
1+1+2+2+3+3+....+100000000+100000000=2(1+2+3+...+100000000)=2x100000000x100000001:2=100000000x100000001

Ngu Người = Super crazy

1+1+2+2+3+3+...........+100000000+100000000=1+1+2+2+3+3+.........100000000+10000000.có đúng ko

từ 1 đến 100000000 có 100000000 số

tổng là:

100000000+1*100000000/2=5000000005000000

đ/s:5000000005000000

dài nhưng dễ

số số hạng là:

(100000000-1):1+1=100000000

tổng dãy số là:

\(\frac{100000000.\left(100000000+1\right)}{2}=5,0000005._{10^{^{14}}}\)

(100000000-1):1+1= bao nhiêu tự tính

1+2+3+4+5+6+7+8+9+....+100000000= bấm máy tính nha bạn

5+5+8+0+6+4+5+2+4+1+1+2+3+4+5+6+6+7+8+9+100000000+45638+78536 x 12345 x 34 x 0 +100=100045829

CHÚC BẠN HỌC GIỎI

TK MÌNH NHÉ

Dạ, cảm ơn anh, nhưng đây kg phải là đáp án của em. TRẻ con còn biết, mà người lại kg .Anh đừng tự tin, nhanh rồi cũng có lúc sai!!!

Dễ mà  bằng 100

Xét tổng trên có

(100000000-1):1+1=100000000

\(\Rightarrow\)Tổng trên 

(1000000000+1)x100000000:2

=100000001x50000000

=5000000050000000

bạn đã sai vì dùng máy tính

100000000                     .

100000000           

100000000

100000000 + 100000000 = 200000000

= 200 000 000

Tích mik nhé -^^-

100 000 000+ 100 000 000= 200 000 000
 

= 6000000000000000000000000000000000

400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000