Question

cứu mình với

1-2+3-4+5-6+7-8+....+2023-2024

Answer 1

1-2+3-4+5-6+7-8+...+2023-2024

\(=\left(1-2\right)+\left(3-4\right)+\left(5-6\right)+\left(7-8\right)+....+\left(2023-2024\right)\)

\(=-1+\left(-1\right)+\left(-1\right)+\left(-1\right)+...+\left(-1\right)\)

\(=-1.1012\)

\(=-1012\)