1,016 prompts matching "An element with no inverse under a given operation"
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WAEC Prep: Factorising the difference of two cubes
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Final Revision: Checking a root of a cubic by substitution
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Quiz: The truth value of a simple proposition
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Spot My Mistake: The negation of a proposition
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Final Revision: A compound proposition built from three simple ones
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Spot My Mistake: Building a truth table column by column
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Spot My Mistake: The contrapositive of a conditional
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Quiz: The biconditional as two conditionals taken together
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WAEC Prep: The double negation law
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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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Final Revision: A longer statement tested for tautology
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Quiz: Modus ponens
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Spot My Mistake: Disjunctive syllogism
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Final Revision: A word problem about seating at a round table
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Quiz: Selecting from two groups at the same time
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Final Revision: A word problem about choosing a delegation
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Quiz: The probability of drawing two red balls
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