1,333 prompts matching "A binary operation defined on the integers"
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WAEC Prep: The triangle of forces and concurrence taken together
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Explain Back: Locating the point of concurrence on a diagram
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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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WAEC Prep: The conditions for a particle under three forces to be in equilibrium
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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Learn: The expectation of a discrete random variable
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WAEC Prep: The probabilities of nought, one and two successes read off an expansion
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WAEC Prep: The binomial expansion of a plus b all to the power n
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Learn: Finding the coefficient of a stated power in an expansion
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WAEC Prep: The four conditions a binomial situation must satisfy
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Practice: The probability of at least one success
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WAEC Prep: The probability of at least one event in a Poisson distribution
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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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Practice: The probability of exactly r events in a Poisson distribution
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Worked Example: The probability of no events at all in a Poisson distribution
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WAEC Prep: Comparing the mean with the variance of a binomial distribution
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WAEC Prep: The mean of a binomial distribution as np
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Practice: The variance of a binomial distribution as npq
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