Question

In which of the following cases will the result be a negative number?
(A) - 1 + 2 - 3 + 4 -……- 19 + 20 (B) (- 1) x (-2) x ( -3) x ……x (-19) x (-20)
(C) (- 1) x (2) x ( -3) x (4)……x (-19) x (20) (D) 1 - 2 + 3 - 4 -……+ 19 – 20

Answer 1

Option D and the result will be -10

Answer 2

d is the correct answer