1,334 prompts matching "The complement rule used in a counting problem"
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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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WAEC Prep: A lamp hanging from two wires, solved by Lami's theorem
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Worked Example: Matching each force to the sine of the angle opposite it
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Learn: Finding two unknown forces by Lami's theorem
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: Expanding p plus q, all to the power n, as a probability model
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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 most likely number of successes in n trials
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WAEC Prep: The four conditions a binomial situation must satisfy
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Explain Back: The binomial probability formula
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Spot My Mistake: The probability of exactly r successes in n trials
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WAEC Prep: The probability of at least one event in a Poisson distribution
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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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Learn: The standard deviation of a binomial distribution
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