alleryEvery non-empty set of whole numbers has what, which makes them well-ordered?
AA greatest element
BA least element
CAn even element
DA prime element
Answer & Solution
Correct answer: B. A least element
1. Well-ordered means every non-empty set has a smallest member.
2. For example, the set {7, 12, 30} has least element 7.
3. There is no greatest element in general, because whole numbers never end.
_Source: Wikipedia, Natural number, Order_
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