Nine Customer Service Technicians Are Available Today for Service Calls

question 26

Multiple Choice

Nine customer service technicians are available today for service calls.As of 9:00 AM, only six service calls are scheduled.How many different assignments of technicians to service calls are possible?

• A)60,480
• B)40,260
• C)120,400
• D)80,290
• E)110,800

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Definitions:

Secondary Immune Response

The response of the immune system upon its second or subsequent exposure to a specific antigen, typically faster and more vigorous than the primary response.

Primary Immune Response

The initial response of the immune system to a foreign antigen, characterized by the activation and proliferation of immune cells.

Initial Exposure

The first encounter or introduction to a stimulus, substance, or environment which may influence subsequent responses.

Vaccination

The administration of a vaccine to stimulate an individual's immune system to develop adaptive immunity to a pathogen.