Which of the following statements is always true for a relation R from set A to set B?
Model Answer & Options
Source: Extra PracticeDomain of R = A
Range of R = B
Range of R ⊆ Codomain of R
Codomain of R ⊆ Range of R
Explanation
By definition, the range of a relation is the set of all second elements of the ordered pairs, which is always a subset of the second set B (the Codomain). The domain is not always equal to A (it is a subset), and the range is not always equal to B (it is a subset). Thus, Option 3 is the only universally true statement.
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