exam Maths Puzzle Numerical Ability

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?

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exam Other Question

find three consecutive even integers such that the largest is three times the smallest. (Use 6 steps)
Given: angle A and angle B, and Angle c and angle D are complementary angles.
measure of angle B = measure of angle D
Prove: angle a is congruent to angle C.

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