As we see earlier that page size/frame size or address size is always a power of 2 because if page size or address size is power 2 then it is easier to break the address into two parts.
If l is one portion of the address then we can calculate another portion as n - l.
Important note:
When a problem-related to paging is given we always try to present all data to power of 2, so, we can calculate easily.
Example:
Like if Logical Address Space = 4KB so, we can write as LAS = 4KB = [because 1KB = ]
The chart which represents the unit in the power of 2:
KB in the power of 2:
This is the same we can represent more units in the power of 2.
Just remember the concept not the chart:
Like 16KB now as we know 1KB = and 16 B =