Mathematician's Answer/Analysis

A Mathematician's Answer is technically correct yet pragmatically infelicitous.


 * "A, B, or C?" &rarr; "Yes"
 * Given a question presenting a set of options that are mutually exclusive yet collectively exhaustive, such as "Is it common or uncommon?", the answer implies only that the options are collectively exhaustive. It is infelicitous because the answerer knew that the asker knew that the options were collectively exhaustive.