alleryA sentence is an acceptable statement only if it is:
ASometimes true for a while
BTrue or false but not both
CBoth true and false at once
DNeither true nor ever false
Answer & Solution
Correct answer: B. True or false but not both
1. Ambiguity disqualifies a sentence.
2. Exactly one truth value is needed.
3. So it must be true or false, not both.
_Source: syllabus Mathematics, Chapter 14, Mathematical Reasoning._
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