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ISTQB-Foundation -chapter4-question13

4.2 Black-box Test Techniques

FL-4.2.3 (K3) Use decision table testing to derive test cases

1. Your favorite bicycle daily rental store has just introduced a new Customer Relationship Management system and asked you, one of their most loyal members, to test it.

The implemented features are as follows:

Anyone can rent a bicycle, but members receive a 20% discount
However, if the return deadline is missed, the discount is no longer available
After 15 rentals, members get a gift: a T-Shirt

Decision table describing the implemented features looks as follows:

Based ONLY on the feature description of the Customer Relationship Management system, which of the above rules describes an impossible situation?

a) R4

b) R2

c) R6

d) R8

Answer Explanation