Question

Find the value of the expression given below:
0-1 + 2 - 3+ 4-5 6-7 8-9 .......-17 + 18-19 +20​

Answer 1

step by step explanation

-1+2

1-3-2+4=2-5

=-3

(-3)(-2)=6

6+(-1)+20

6-19=-13

Answer 2

Answer:

10

Step-by-step explanation:

just follow the pattern