Toán Lớp 6: C = 1-7+13-19+25-31+...+2017

C = 1-7+13-19+25-31+...+2017 - 2023 có SSH là ( 2023 - 1 ) : 6 + 1 = 338 ( SSH ) có số cặp là : 338 : 2 = 169 ( cặp ) tổng C = 169 x (-6) = -1014

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Toán Lớp 6: C = 1-7+13-19+25-31+…+2017 – 2023