1,045 prompts matching "Why the mean and the variance of a Poisson distribution are equal"
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Final Revision: Checking a factorisation by expanding it again
Act as my SS2 Further Mathematics tutor at the end of the term. Give me a rapid recap of c
Final Revision: Checking a root of a cubic by substitution
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Common Mistakes: Comparing two statements by their truth tables
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Quiz: Why a conditional with a false antecedent counts as true
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Practice: What logical equivalence means
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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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Final Revision: A biconditional used in a mathematical definition
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WAEC Prep: A tautology used to justify a rule of algebra
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Final Revision: An argument written in words and tested for validity
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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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Quiz: Why one person is fixed in a circular arrangement
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Show All Working: A circular arrangement with one fixed seat such as the head
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Spot My Mistake: A selection with at least a stated number of one kind
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WAEC Prep: A selection with at most a stated number of one kind
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Show All Working: Selecting a committee with the chairman named separately
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Show All Working: The complement rule used in a counting problem
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Show All Working: The binomial coefficients written as n choose r
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