1,333 prompts matching "Arranging r of n objects in a line"
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Explain Back: Finding an unknown coefficient given that a stated factor divides the polynomial
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WAEC Prep: Sketching a cubic from its factorised form
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Explain Back: Forming a cubic equation whose three roots are given
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Quiz: Solving a quadratic inequality using a sign table
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Practice: Solving an inequality with the unknown in the denominator
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Explain Back: Solving an inequality that involves a modulus
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WAEC Prep: Writing a solution set in interval notation
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Practice: Choosing a committee that must contain one particular person
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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WAEC Prep: Pascal's triangle and the combination numbers in it
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Spot My Mistake: The double angle formula for sine
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Learn: Solving sin x equals a given value between 0 and 360 degrees
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Explain Back: Solving a quadratic in sin x
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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WAEC Prep: Solving an equation by first applying a double angle formula
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Learn: The distance between two points
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Quiz: Finding the centre and the radius from the general equation
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Explain Back: Deciding whether a point lies inside, on or outside a circle
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Practice: The ellipse in standard form, and its two axes
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