Final answer:
The page table in memory is pointed by the Page table base register.
Step-by-step explanation:
The address of a page table in memory is pointed by the Page table base register. The page table is a data structure used in virtual memory systems to map virtual addresses to physical addresses. The page table base register holds the starting address of the page table in memory. By using this register, the processor can access the necessary page table entries to translate virtual addresses to physical addresses.