1,093 prompts matching "When to use permutations versus combinations"
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Spot My Mistake: When the normal distribution may approximate the binomial
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Worked Example: The continuity correction when approximating a discrete distribution
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Quiz: Reading the wording of a question to decide which distribution applies
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Quiz: Writing a two-dimensional vector as a column
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Spot My Mistake: Drawing a vector as a directed line segment
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Quiz: The direction cosines of a vector in three dimensions
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Learn: The magnitude of a three-dimensional vector
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Quiz: The direction of a vector as an angle with the x-axis
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Learn: The unit vectors i, j and k
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Spot My Mistake: The vector from A to B as the difference of two position vectors
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Learn: Subtracting one vector from another
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Learn: The angle between a vector and one of the axes
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Quiz: The vector equation of the line through two given points
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Spot My Mistake: The equilibrium condition written in vector form
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WAEC Prep: De Moivre's theorem used with a negative index
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Quiz: Using the initial conditions to fix the constants in a kinematics problem
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Learn: Newton's second law written as F equals ma
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Quiz: Newton's third law, and identifying the pair of forces
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Practice: The middle term when the power is odd
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Spot My Mistake: Partial fractions with an irreducible quadratic factor
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