Question

What is value of 0 -1 +2 -3 +4 -5 +6 -7 ............... +16 -17 +18 -19 +20

Answer 1

Answer:

10

Step-by-step explanation:

we can get the value bye simply

2-1=1

4-3=1

5-4=1

like this we can get up to 20

We have 10number of 1 adinng we have tha answer 10

Answer 2

2-1=1

4-3=1

So finally answeris10