Question

tinh tong cua 1+4+9+16+...+100

Answer 1

1 + 4 + 9 + .... + 100

= 1² + 2² + ... + 10²

= 1 + 4 + 9 + 16 + 25 + 36 + 49 + 64 + 81 + 100

= 385 

Answer 2

385 nha tick cho mình đó nha 

Answer 3

1+9+16+20+100=146 tich nha hu hi ha

 

 

Answer 4

(100-1):3+1=34(số)

34x(100+1):2=1717

tick mk nha

Answer 5

1×1=1

2×2=4

3×3=9

4×4=16

5×5=25

6×6=36

7×7=49

8×8=64

9×9=81

10×10=100

1+4+9+16+25+36+49+64+81+100

= 385