1,017 prompts matching "Learn: What an identity element is"
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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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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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Final Revision: A biconditional used in a mathematical definition
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Spot My Mistake: The law of the excluded middle
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Final Revision: A longer statement tested for tautology
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Worked Example: Arranging r of n objects in a line
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Quiz: Arrangements of a word with no repeated letters
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Practice: Arrangements of a word with repeated letters
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Practice: Circular arrangements with two people together
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Final Revision: A word problem about seating at a round table
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Spot My Mistake: A selection with at least a stated number of one kind
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Final Revision: A word problem about choosing a delegation
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Spot My Mistake: The probability that a committee contains a given person
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Final Revision: A word problem about a lottery draw
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Worked Example: Reading the coefficients of an expansion off Pascal's triangle
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Quiz: Expanding a bracket to the power four using Pascal's triangle
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Practice: The symmetry of a row of Pascal's triangle
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Worked Example: Finding the fifth term of an expansion
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