1,332 prompts matching "Arranging objects when some must stay in a fixed order"
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Quiz: Checking an inverse by multiplying to get the identity
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Quiz: Checking a 3 by 3 inverse by multiplication
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WAEC Prep: When the matrix method is worth the work for three unknowns
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Quiz: Solving three simultaneous equations with the inverse matrix
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Spot My Mistake: Compounding three forces acting at one point
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WAEC Prep: Why one component vanishes when the direction is chosen well
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Quiz: Recovering the original force from its two components
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Spot My Mistake: Drawing the triangle of forces to scale to find an unknown force
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Spot My Mistake: The moment of a force whose line of action is not perpendicular
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Learn: The algebraic sum of moments when the senses differ
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Quiz: The point about which the total moment of a set of forces vanishes
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Spot My Mistake: Using concurrence to find the direction of an unknown third force
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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Spot My Mistake: Finding two unknown tensions from three forces in equilibrium
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Spot My Mistake: When Lami's theorem may be used, and when it may not
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Spot My Mistake: The probability of exactly r successes in n trials
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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Spot My Mistake: Reading a probability from the standard normal table
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Quiz: The probability in the upper tail of a normal distribution
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Quiz: Reading the wording of a question to decide which distribution applies
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