solve the series..............

It is too much easy.. 1+2=3

and 5-3=2

then 3+2=5

in the same way

3+6=9

and 8-7=1

then 9+1=10

Actually this question is not so good. because the examples show that the answer can be acquired in two different ways. either by adding then 2nd and 3rd number (2+3=5 and also 5+6=11). the other way by which we can solve it is by adding the 1st and the last number and then by subtracting 1 from it {(1+5)-1=5} and also {(4+8)-1=11}. the answer for this question can be obtained by using the second way. SO (3+8)-1=10. AND 10 IS THE ANSWER :)))

$1+2-3+5=5$

$4+5-6+8=11$

$3+6-7+8=\boxed{10}$