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Maths Puzzle
Numerical Ability
Can you help me factor the polynomial 8a^3b+12a^2b^2-4a^2b
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John and Harvey sold widgets, Harvey sold 2½ times as many widgets as John. If the difference in their sales was 87 units. How many widgets did each of them sell?
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Using the index of a sequence as the domain and the value of the sequence as the range, is a sequence a function?
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