I want to do this test
I have a site with 3 pages
- page A
- page B
- page C
All pages are indexed in Google
From each page, the user can go on the other pages via internal links
With Google Analytics. Know I how many people have seen the page A and C (not only A or only B but both) ?
Re: Custom report
This is where segmentation is your best friend.
Do you want to segment on "session" or "user"? This because you need to choose between a segment on "sessions" or "users".
The next step is to select page A and C and tie them to your segment.
Even before saving your segment you can see on the right side the percentage of sessions or users that is included on your segment. This will deliver the answer to your question.
Best of luck,