ISTQB Exam ATA Topic 4 Question 53 Discussion

While identifying scenario's for the use case ''copy A4 -- A4'' for a new copier, the following scenario's were identified:

Basic scenario: single side to single side

Deviations: single side to double side, copy of a set, copy using the automatic document feeder Failures: no paper in paper tray, paper jam, out of staples

During interviews with both development and end-users it has been established that the failure scenario's can occur during the basic scenario and during each of the deviations.

How many test cases will be needed to achieve full coverage both for valid and invalid situations?

[K3] 2 credits