Question

(1+2-3)+(4+5-9)+(6+7-13)+(8+9-16)+(10+11-20)​

Answer 1

Answer:

(1+2-3)=  0

(4+5-9) = 0

(6+7-13) = 0

(8+9-16) = 1

(10+11-20) = 1

⇒(1+2-3)+(4+5-9)+(6+7-13)+(8+9-16)+(10+11-20)​ = 0 + 0 + 0 + 1 + 1

→ 2

Answer 2

Answer:

(0)+(0)+(0)+(-1)+(-1)

-1-1

=0

is the answer