1,251 prompts matching "how many ways can a president and secretary be chosen from 8 people"
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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Quiz: The standard deviation of a Poisson distribution
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WAEC Prep: The shape and the symmetry of the normal curve
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Learn: The mean, median and mode of a normal distribution
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Quiz: The area under the normal curve, and what it represents
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Spot My Mistake: Reading a probability from the standard normal table
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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: Finding the mean or the standard deviation from a given probability
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Learn: The probability that a normal variable lies between two values
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WAEC Prep: The zero vector, and what it means
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WAEC Prep: Writing a two-dimensional vector in i and j form
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Practice: The components of a vector given its magnitude and direction
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WAEC Prep: Writing a three-dimensional vector in i, j and k form
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WAEC Prep: A unit vector, and what makes it a unit
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Learn: The unit vectors i, j and k
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WAEC Prep: Showing a triangle is right-angled using the dot product
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WAEC Prep: The resultant force on a particle given in i and j form
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WAEC Prep: Writing a force as a vector in i and j form
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