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Time to play detective! Every puzzle in this collection contains a set of statements, but it's up to you to figure out which of those statements are true and which of them are false. See more

A self-referential statement is a statement that describes itself.

Is the following self-referential statement true?

\[\begin{array}{|l|} \hline {\text{ Seven words are used in this sentence. }} \\ \hline \end{array} \]

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\[\begin{array}{|l|} \hline {\text{This statement is false. }} \\ \hline \end{array} \]

If the statement above is logical, can we conclude that the statement is indeed false?

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If this statement has eleven words, then this statement is false.

If the statement above is logical, can we conclude that the statement is indeed false?

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Assuming this self-referential statement is logical, determine whether it is true or false.

\[\begin{array}{|l|} \hline {\text{ This statement is either true or false. }} \\ \hline \end{array} \]

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If Haley only tells lies on the weekends (Saturday and Sunday) and only tells the truth on all other days, on which days can she make the following statement?

"I told a lie yesterday."

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