AP has 2 pages or 3 pages?

[allaboutgc]

I got AP issued by TSC, which has 2 identical pages.
But I remember someone saying AP has 3 identical pages?

By the way, on each trip, should I use just 1 page or should I use all the pages?

Is it one page for one trip?

But each page says multiple trips...

Very confused...

Thanks!