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Excel in math and science
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Logic
Truth-Tellers and Liars
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Concept Quizzes
A self-referential statement is a statement that describes itself.
Is the following self-referential statement true?
\[\begin{array}{|l|} \hline {\text{ Seven words are used in this sentence. }} \\ \hline \end{array} \]
Excel in math and science
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Our wiki is made for math and science
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by Brilliant Staff
\[\begin{array}{|l|} \hline {\text{This statement is false. }} \\ \hline \end{array} \]
If the statement above is logical, can we conclude that the statement is indeed false?
Excel in math and science
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by Brilliant Staff
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?
Excel in math and science
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by Brilliant Staff
Assuming this self-referential statement is logical, determine whether it is true or false.
\[\begin{array}{|l|} \hline {\text{ This statement is either true or false. }} \\ \hline \end{array} \]
Excel in math and science
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by Brilliant Staff
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."
Excel in math and science
Master concepts by solving fun, challenging problems.
It's hard to learn from lectures and videos
Learn more effectively through short, conceptual quizzes.
Our wiki is made for math and science
Master advanced concepts through explanations,
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That seems reasonable.
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by Brilliant Staff