What is the electric flux through the surface a1 that encloses all three objects?

For the answer to the question above, I assume that the question is two objects, O1 and O2 have charges + 1.0 µC and - 1.9 µC, respectively, and a third object, O3,? two objects, O1 and O2 have charges + 1.0 µC and - 1.9 µC, respectively, and a third object, O3, is electrically neutral.

From Gauss's law:

Flux = ∫c E. dA = q/eo

Since this surface encloses all

charge, we can simplify:

Flux = (q1+q2+q3) / eo

Flux =

((1*10^-6) + (-1.9*10^-6) + (0)) / (8.85*10^-12) = - 101694.92 N·m2/C