723 prompts matching "Explain why a matrix with zero determinant has no inverse"
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Worked Example: Premises and conclusion
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Quiz: Modus ponens
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Spot My Mistake: Disjunctive syllogism
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WAEC Prep: Testing an argument for validity by truth table
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Final Revision: An argument written in words and tested for validity
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Worked Example: Arranging r of n objects in a line
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Final Revision: Counting the arrangements of people in a queue
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Worked Example: The number of ways n people sit round a round table
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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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Spot My Mistake: The probability that a committee contains a given person
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WAEC Prep: The probability of at least one of a kind
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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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Final Revision: Expanding a bracket of the form a plus b over x
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Worked Example: Finding the fifth term of an expansion
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Quiz: Finding the term in x cubed
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