755 prompts matching "WAEC question on probability using combinations"
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Cross-multiplying to solve an equation with fractions
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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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Learn: Telling a rational number from an irrational one
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Worked Example: Why the square root of a non-square whole number is irrational
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Quiz: Writing a recurring decimal as a fraction to show it is rational
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Practice: Deciding whether root 16 is rational or irrational
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Explain Back: Where the surds sit on the number line
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Spot My Mistake: The decimal expansion of an irrational number, and why it never repeats
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Show All Working: Classifying a mixed list of numbers as 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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Common Mistakes: Expressing root 50 as a multiple of root 2
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Final Revision: Surds that cannot be combined at all
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Quiz: Subtracting one surd from another
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Spot My Mistake: Dividing one surd by another
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Show All Working: Simplifying a surd expression that contains brackets
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Common Mistakes: Expanding the product of two surd brackets
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Final Revision: Simplifying a fraction whose numerator and denominator are both surds
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