exam Maths Puzzle Numerical Ability

what operations are used in the algebraic expression xyz over 2?

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exam Other Question

Twenty men did 1/4 of a job in eight days. Then it became necessay to complete the job in the next five days. How many additional men were added to the crew of twenty to accomplish this task? Solve the rational inequality and graph the solution set on a real number line. express the solution set in interval notation.

x-8/x+3<0