exam Maths Puzzle Numerical Ability

find three consecutive even integers such that the largest is three times the smallest.

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exam Other Question

a recipe requires 3 cups of flour to make 27 dinner rolls. how muck flour is needed to make 9 rolls If your test scores are 80 and 100, then the arithmetic mean of you scores is 90. The geometric mean of the scores is a number h such that
80/h=h/100

Are you better off with the arithmetic mean or the geometric mean?