GRE Exam Numerical Ability Ratio and Proportion

After being dropped a certain ball always bounces back to 2/5 of the height of its previous bounce. After the first bounce it reaches a height of 125 inches. How high (in inches) will it reach after its fourth bounce?

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GRE Other Question

A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 per cent larger than the original. By what percentage has the area of the logo increased? n and p are integers greater than 1
5n is the square of a number
75np is the cube of a number.
The smallest value for n + p is