531 prompts matching "Quiz: Choosing a committee of r people from n"
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Finding an unknown coordinate using the gradient formula
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Coordinate geometry exam question: quadrilateral vertices
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Explaining gradient, midpoint and distance formulas in my own words
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Distinguishing gradient sign: positive, negative, zero, undefined
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Expanding and simplifying with negative brackets
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Adding two algebraic fractions with different denominators
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Dividing algebraic fractions
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Solving a double inequality
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Representing a solution set on a number line
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Solving simultaneous linear equations by substitution
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Solving simultaneous linear equations by elimination
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Changing the subject when the variable appears twice
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Substituting values into an algebraic expression
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Solving a word problem using simultaneous equations
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Explaining the difference between an expression and an equation
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Common sign errors in algebraic manipulation
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Practice: Deciding whether root 16 is rational or irrational
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Common Mistakes: Why a rational number added to an irrational one stays irrational
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Final Revision: Approximating a surd to three decimal places
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Practice: Collecting similar surds in an expression
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