How do I upgrade from GMAT Navigator Basic to the full version?

Hi Stacey, I have all the books a la carte (All the Quant, All the Verbal, IR, FOV, FOM, Advanced Quant) which I believe I have registered individually on Atlas. Does this give me access to the full version of Navigator by right or do I actually need to purchase an upgrade? I emailed support a few d...

Hi Stacey are you there?

For OG 2022, PS 181, in your solution, the correct formula should be Total = A + B + C - AB - AC - BC + ABC and not -2ABC as written.

For me when I subtracted AB, AC and BC, ABC are also included so it was subtracted 3 times so I needed to add ABC 1 more time to make the final subtraction twice. I think I understand your solution though. You are treating those in the AB group as those in A and B but not C. I treated those as possi...