RB - Calculated field question

[system]

Goodmorning,

Could anyone give me the exact expression for a calculated field which would
filter out certain part numbers which are in various ranges.

For example:

list all part numbers only from A001 to A010 and B001 to B010

Also, when filtering the report for this calculation what specifics do I need
to do ?

Thank You,

Gary
KRG Enterprises