If a binary relation is defines as r = {(4,5), (5,4), (5,4), (5,6),(6,4)}, then domain of R is ?
- {4,6}
- {4,5,6}
- {4,5}
- None of these
Explanation
The domain of a relation is the set of all first elements in the ordered pairs. For the relation R:
The first elements areSo, the domain of 𝑅 is {4,5,6}.
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