\(=(1-2-3+4)+(5-6-7+8)+...+(2020-2021-2022+2023)\)
\(=0+0+...+0=0\)
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Các câu hỏi tương tự
S = 1+2-3-4+5+6-7-8+9+10+ ..... + 2018-2019-2020+2021-2022+2023
Tính:1 - 2 - 3 + 4 + 5 - 6 - 7 + 8 + 9 - 10 - 11 +...-2023+2024+2025 mình cần gấp ạ
Tính hợp lí (nếu có thể):
A= -1-2+3+4-5-6+7+8-9-10+...+2019+2020-2021-2022+2023
Tính:
A= -1+2-3-4-5+6-7-8-9+...-2021+2023-2024
B=1.3.5+3.5.7+5.7.9+7.9.11+...+99.101.103
C=1.3+2.4+3.5+...+198.200
1. a,23/27-(11/17-4/27) +(28/17) b,2/3 .7/9 +2/3 .2/9-2/9 c,7/3:5/11-1/3.11/5 d,(1+1/2) .(1+1/3) .(1+1/4).......(1+1/2023) e, (1-1/2).(1-1/3).....(1-1/2023) f,13/17.5/11-7/13.2/5+5/11.4/17-2/5.6/13 g, 1/2+1/3.1/4-1/5:1/6 2,so sánh n+2/n+3 và n+1/n+2 ( n là số tự nhiên)
Bài 1: Tính nhanh
A = 1 - 3 + 5 - 7+...- 2019 + 2021 - 2023
B = 1 + 2 - 3 - 4 + 5 + 6 - 7 - 8 + 9 +...+ 2017 + 2018 + - 2019 - 2020
Help me :v
1-2+3-4+5-6+7-8+...+2023-2024
P=1-2-3+4+5-6-7+8+.........+2023-2024
A=1-3+5-7+...+2019-2021+2023
B=1-2-3+4+5-6-7+8+...+1993-1994
1-2-3+4+5-6-7+8+...+2018-2019-2020+2021+2022-2023