1,334 prompts matching "A word problem about seats in the rows of a hall"
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WAEC Prep: Calculating a moment as force times perpendicular distance
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WAEC Prep: Why three non-parallel forces in equilibrium must be concurrent
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WAEC Prep: A particle in equilibrium on a smooth inclined plane
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WAEC Prep: A knot held in equilibrium by three strings
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Practice: Resolving three forces in two perpendicular directions
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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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WAEC Prep: A random variable, and the values it may take
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Practice: Using a binomial expansion to approximate a number
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WAEC Prep: The Poisson formula, and what lambda stands for
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Quiz: The situations a Poisson distribution models
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Learn: Finding lambda from a stated mean
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WAEC Prep: Why the total area under the normal curve is one
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Quiz: The area under the normal curve, and what it represents
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WAEC Prep: Comparing two values from different normal distributions by z-score
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Worked Example: Finding a value from a given probability by working backwards
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WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: The probability that a normal variable lies below a given value
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Learn: The probability that a normal variable lies between two values
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