Question

1-2+3-4+5-...-150+151

Answer 1

= -1+-1+..+-1 +151

= -1.75+151

= -76

Answer 2

nhầm....= 76 nha bn

Answer 3

oh oh hình như mình sau rồi

Answer 4

1 - 2 + 3 - 4 + 5 -...- 150 + 151

= ( - 1) + ( - 1) + ... + (-1) + 151

=           - 75 + 151

= 76

Answer 5

1 - 2 + 3 - 4 + 5 - ... - 150 + 151

= (1-2) + (3-4) + (5-6) +.....(-150 +151)

= -1 + -1 + -1 + ....... + 1 + 1 + 1

= 0