exam Maths Puzzle Numerical Ability

solve using long division

(x^3+4x^2-3x-12) divided by (x^2-3)

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exam Other Question

Word Problem:

If John cleans a house in 8 hours and Julie cleans a similar house in 6 hours, how long should it take them to clean another similar house working together? How many 6 digit numbers can be made with any combination and permutation of 3 and 7? (e.g. 377777, 737777, 777333, 733733, 333337)