Perform the indicated operation(s), if possible. Do not use a calculator. If the operation cannot be completed, state why. 
AB and BA
Definitions:
World Class Firm
A company that achieves high levels of efficiency, competitiveness, and profitability, recognized globally for excellence in its operations and services.
Performance Measures
Metrics or standards used to evaluate the efficiency, effectiveness, and quality of operations or activities within an organization.
Large Lead Time
An extended period that passes from the initiation of a process to its completion, often seen in manufacturing and supply chain management.
Shipping Mode
The method or means by which goods are transported from one location to another, including options such as air, sea, road, or rail.
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