823 prompts matching "Showing a set is not closed by a single counter-example"
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Common Mistakes: Writing the converse, inverse and contrapositive of one statement
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Common Mistakes: Simplifying a compound statement using the laws
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Learn: What a tautology is
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Worked Example: What a contradiction is
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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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Common Mistakes: The fallacy of denying the antecedent
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Common Mistakes: Arranging objects when some must stay in a fixed order
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Common Mistakes: Comparing a line arrangement with a circular one
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Worked Example: Selections in which the order does not matter
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Common Mistakes: The number of ways of dividing a class into groups
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Common Mistakes: The link between Pascal's triangle and combinations
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WAEC Prep: The two middle terms when n is odd
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Common Mistakes: The general term when one term in the bracket is negative
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IGCSE Additional Maths Y11: An angle given as a multiple of pi — Common Mistakes
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IGCSE Additional Maths Y11: A composite region built from a rectangle and a sector — Common Mistakes
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IGCSE Additional Maths Y11: Finding every angle in a range with a given sine — Common Mistakes
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IGCSE Additional Maths Y11: The graph of a trigonometric function drawn in radians — Common Mistakes
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IGCSE Additional Maths Y11: Simplifying an expression down to a single ratio — Quiz Me
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Quiz me with five shor
IGCSE Additional Maths Y11: Proving an identity in the Cambridge 'show that' style — Common Mistakes
I am a Year 11 pupil taking Cambridge IGCSE Additional Mathematics. Show me the mistake ca