Final answer:
The true or false nature of the statements regarding the domain 'r' cannot be determined without information about what values are included in the domain 'r'.
Step-by-step explanation:
The question provided deals with the concept of domains in predication within mathematics. The domain of a predicate consists of all the possible values that can be taken by the variables. In this context, the variables are a, b, c, and d, and the domain is denoted as 'r'.
To determine which statements are true or false, we need information about the composition of the domain r, which is not provided. However, generally speaking:
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As these statements are about the inclusion or exclusion of elements in a set, without specific information about the contents of the domain 'r', we cannot definitively classify the statements as true or false. In mathematics, precision is key, and assumptions cannot be made without evidence.