1+2+3+4+5+6+7+8+9+10=55

11+12+13+14+15+16+17+18+19+20=155

1+2+3+4+5+6+7+8+9+10+11+12+13+14 +15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362

1+2+3+4+5+6+7+8+9+10=55

11+12+13+14+15+16+17+18+19+20=155

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30-50-53=362

Chuyển thành văn bản đc k bạn

362

=(1+19)+(2+18)+(3+17)+(4+16)+(5+15)+(6+14)+(7+13)+(8+12)+(9+11)+10+20

=20x10+10

=210

(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 ) -1-5-9-3=

= ( 1 + 20 ) x 20 : 2 - 1 - 5 - 9 - 3 

= 210 - 1 - 5 - 9 - 3 

= 192

hok tốt

bn rảnh ghê ha

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20-1-5-9-3=192

\(192\)

= 210 

k mk nha chuc ban hoc gioi 

 mk nhanh nhat k mk nha

210 nha

là 210 đó bạn

bằng190

210 nhé

bằng 55

1+2+3+4+5+6+7+8+9+10

=(1+9)+(2+8)+(3+7(4+6)+10+5

=10+10+10+10+10+5

=50+5

=55

1+2+3+4+5+6+4+8+9+10

=(1+9)+(2+8)+(3+7)+(4+6)+5+10

=10+10+10+10+15

= 55

=210 k nha

turbo pascal là ra ngay

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=210 

Nha bn

1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20=210 nha bn

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

=(1+19)+(2+18)+(3+17)+(4+16)+(5+15)+(6+14)+(7+13)+(8+12)+(9+11)+(10+20)

=20+20+20+20+20+20+20+20+20+30

=40+40+40+40+50

=(80+80)+50

=160+50

=210

*Ryeo*

Trả lời:

= 210 nhé