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I am currently learning about propositions and came across a statement in this video:

There are 5 regular solids: true

There are 6 regular solids: false

But then I am wondering if a statement There are 4 regular solids will be considered true or false.

e.g., I believe the following results:

There are at-least 4 regular solids: true

There are exactly 4 regular solids: false

To be more specific, there are definitely at-least 4 regular solids, but without at-least or exactly as qualifying adverbs, how should the above proposition be interpreted?

senseiwu
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    It's ambiguous, for precisely the reasons you stated. There is no right answer. If given such a statement, you should either (a) ask the asker for clarification, or (b) include both answers, explaining the distinction between each and so on. – PrincessEev Feb 26 '21 at 09:35
  • A square has three sides. True or false? – Raffaele Feb 26 '21 at 09:51
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    @Raffaele thanks for pointing out a simpler case. If your case were asked in a geometry class, the answer is clear (wrong). But in a logic class, I am not sure (and thats the reason for my question) – senseiwu Feb 26 '21 at 11:09
  • I would take your reading of the problem even further: are there $6$ regular solids? Well, $6$ cubes (of different edge lengths if you will) do the trick... The question, to be more precise, should state something like "Are there $6$ non-equivalent regular solids?". – GVT Feb 26 '21 at 14:46

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