Toán 1 + 2 – 3 – 4 + 5 + 6 – 7 – 8 + 9 + 10 – 11 – 12 +…..- 299 – 300 + 301 + 302 Giup mình với 19/07/2021 By Jade 1 + 2 – 3 – 4 + 5 + 6 – 7 – 8 + 9 + 10 – 11 – 12 +…..- 299 – 300 + 301 + 302 Giup mình với
`1 + 2 – 3 – 4 + 5 + 6 – 7 – 8 + 9 + 10 – 11 – 12 + … – 299 – 300 + 301 + 302` `= 1 + (2 – 3 -4 + 5) + (6 – 7 – 8 + 9) + (10 – 11 – 12 + 13) + … + (298 – 299 – 300 + 301) + 302` `= 1 + 0 + 0 + 0 + … + 0 + 302` `= 1 + 302` `= 303` Trả lời
1+2-3-4+5+6-7-8+ …-299-300+301+302 =1+(2-3-4+5)+(6-7-8+9)+…+(298+-299-300+301) +302 =1+0+0+…+0+302 =1+302 =303 # Lazy warriors @Xin ctrlhn ạ Trả lời