1,093 prompts matching "When to use permutations versus combinations"
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Quiz: The product of the roots of a cubic
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Spot My Mistake: The relations between roots and coefficients for a quartic
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Learn: Solving a linear inequality, and reversing the sign on dividing by a negative
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Quiz: Solving a quadratic inequality using a sign table
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Spot My Mistake: Showing the solution of an inequality on a number line
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Quiz: The number of arrangements of r objects chosen from n
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Spot My Mistake: Arrangements in which two particular objects must be kept apart
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Quiz: Choosing a committee of r people from n
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Spot My Mistake: The identity that n choose r equals n choose n minus r
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Learn: The Pythagorean identity, sin squared plus cos squared equals one
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Quiz: The compound angle formula for sine of A plus B
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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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Quiz: Solving tan x equals a given value, and the period of the tangent
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Spot My Mistake: Solving an equation by first applying a Pythagorean identity
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Learn: The shape, period and range of the sine curve
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Spot My Mistake: The effect of c in y equals sin x plus c
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Learn: The distance between two points
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Quiz: The gradient of the line through two points
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Spot My Mistake: The general form ax plus by plus c equals nought
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