662 prompts matching "A set closed under one operation but not another"
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Spot My Mistake: The negation of a proposition
Act as my SS2 Further Mathematics tutor. Work a question on the negation of a proposition
Show All Working: Translating an English sentence into logical symbols
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Common Mistakes: Translating a symbolic statement back into English
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Quiz: Disjunction and the inclusive or
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Spot My Mistake: Building a truth table column by column
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WAEC Prep: A truth table with three propositions in it
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Show All Working: Reading the final column of a truth table
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Common Mistakes: Comparing two statements by their truth tables
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Final Revision: The exclusive sense of or, and its truth table
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Quiz: Why a conditional with a false antecedent counts as true
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Spot My Mistake: The contrapositive of a conditional
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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Quiz: The biconditional as two conditionals taken together
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Spot My Mistake: De Morgan's laws in logic
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WAEC Prep: The double negation law
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Common Mistakes: Simplifying a compound statement using the laws
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Final Revision: A biconditional used in a mathematical definition
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Quiz: What a contingency is
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Spot My Mistake: The law of the excluded middle
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WAEC Prep: A tautology used to justify a rule of algebra
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