exam Maths Puzzle Numerical Ability

(a) Find x if the numbers 3-x, x, and 1-3x form an arithmetic sequence. And then (b) find the next term of the sequence after the ones represented in part (a).

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exam Other Question

Which two expressions are equivalent? Explain your reasoning.

-sqrt, sqrt-36, -6 The ages of two brothers are in the ratio two to three, but in eight years the ratio of their ages will be three to four. Find their present age?