355 prompts matching "Set difference A minus B"
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Worked Example: The truth table for the biconditional
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WAEC Prep: The double negation law
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Show All Working: The distributive laws in logic
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Common Mistakes: Simplifying a compound statement using the laws
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Worked Example: What a contradiction is
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WAEC Prep: A tautology used to justify a rule of algebra
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Show All Working: The negation of a tautology
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Worked Example: Premises and conclusion
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WAEC Prep: Testing an argument for validity by truth table
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Show All Working: The fallacy of affirming the consequent
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Common Mistakes: The fallacy of denying the antecedent
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Worked Example: Arranging r of n objects in a line
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WAEC Prep: Arrangements with two particular items not adjacent
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Show All Working: Arrangements of boys and girls alternately
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Common Mistakes: Arranging objects when some must stay in a fixed order
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Worked Example: The number of ways n people sit round a round table
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WAEC Prep: Beads on a necklace, and why the count halves
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Show All Working: A circular arrangement with one fixed seat such as the head
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Common Mistakes: Comparing a line arrangement with a circular one
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