695 prompts matching "GP with 3rd term 18 and 6th term 486: find a and r"
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Common Mistakes: Rationalising when both terms of the denominator are surds
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Practice: Solving an equation with a surd on each side
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WAEC Prep: Equating the rational and the irrational parts of an equation
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Practice: An operation that is not commutative, with a counter-example
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Quiz: Left distributivity and right distributivity
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Show All Working: An element with no inverse under a given operation
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Learn: Reading index notation, the base and the exponent
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Quiz: A negative index on a fraction, and turning it upside down
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Practice: A fractional index with numerator one, read as a root
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Practice: Finding the nth term of a quadratic sequence
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WAEC Prep: A finite sequence and an infinite sequence
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Show All Working: Deciding whether a given number is a term of a sequence
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Practice: Finding the twentieth term of a given arithmetic progression
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Common Mistakes: An arithmetic progression with a negative common difference
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Spot My Mistake: The sum of an arithmetic progression with a negative common difference
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Show All Working: The sum of the terms lying between two given positions
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Common Mistakes: Proving the sum formula by pairing the terms
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Practice: Finding the eighth term of a given geometric progression
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WAEC Prep: A geometric progression with a negative common ratio
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Show All Working: A geometric progression with a fractional common ratio
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