535 prompts matching "Explaining why we rationalise denominators"
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Worked Example: Selections in which the order does not matter
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Quiz: Selecting from two groups at the same time
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Spot My Mistake: A selection with at least a stated number of one kind
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WAEC Prep: A selection with at most a stated number of one kind
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Show All Working: Selecting a committee with the chairman named separately
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Learn: Probability as favourable outcomes over total outcomes
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Worked Example: Counting the total outcomes with combinations
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Quiz: The probability of drawing two red balls
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Spot My Mistake: The probability that a committee contains a given person
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WAEC Prep: The probability of at least one of a kind
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Show All Working: The complement rule used in a counting problem
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Learn: Building Pascal's triangle row by row
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Worked Example: Reading the coefficients of an expansion off Pascal's triangle
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Spot My Mistake: Expanding a bracket with a minus sign inside it
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WAEC Prep: Expanding a bracket with a coefficient on x
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Show All Working: The binomial coefficients written as n choose r
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Learn: The formula for the general term of an expansion
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Worked Example: Finding the fifth term of an expansion
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Quiz: Finding the term in x cubed
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Spot My Mistake: The middle term when n is even
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