Question

tính tổng:

1+2+3-4-5-6+7+8+9-10-11-12+.....+97+98+99-100-101-102

Answer 1

cau nay chinh con me no

Answer 2

con nay la 1209876

111111111111000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Answer 3

(1+2+3-4-5-6)+(7+8+9-10-11-12)+....+(97+98+99-100-101-102)=-27+-27+...+-27

                                                                                          =-27*17=-153

neu dug thi tk nha