Question

1-2+3-4+5-6+.......+21-22=​

Answer 1

Answer:

-11

Step-by-step explanation:

Bro dont do any thing just add and subtract if you don't know Arthematic progression and if you know just apply it

Answer 2

1−2+3−4+5−6+7−8+9−10

+11−12+13−14+15−16+17

−18+19−20+21-22 = -11

-11 is the right answer.