p, q and r are three points on the real number line where q = $latex \frac{2pr}{p+r}$. Quantity A: $latex \left | \frac{1}{p} - \frac{1}{r}\right |$ Quantity B: $latex \left | \frac{1}{q} - \frac{1}{p}\right |$ Explanation: q = $latex \frac{2pr}{p+r}$ qp + qr = 2pr Divide both sides of the equation by pqr (1/r) + (1/p) = (2/q) [(1/r) + (1/p)]/2 = … [Read more...] about Quantitative Comparison – Numberline, Absolute Value

# GRE Quantitative Comparison

## Quantitative Comparison – Number Properties

N is the smallest number that has 7 factors.Quantity A: Number of factors that sqrt(N) has.Quantity B: Number of factors that N-2 has.Explanation:A number with 7 factors will be of the form a6.N is given to be the smallest such number. Hence N = 26.Quantity A:Sqrt(N) = 23and this has 4 factors.Quantity B:N – 2 = 26 – 2 = 64 – 2 = 62 = 2 * 31 and this has 4 factors.Therefore, … [Read more...] about Quantitative Comparison – Number Properties

## Quantitative Comparison – Coordinate Geometry

Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices:(A) Quantity A is greater.(B) Quantity B is greater.(C) The two quantities are equal.(D) The relationship cannot be determined from the information given.A circle with radius 5 and passing through the … [Read more...] about Quantitative Comparison – Coordinate Geometry

## Quantitative Comparison – Number Properties & Theory

Compare Quantity A and Quantity B, using additional information centered above the two quantities if such information is given, and select one of the following four answer choices: (A) Quantity A is greater. (B) Quantity B is greater. (C) The two quantities are equal. (D) The relationship cannot be determined from the information given. N = … [Read more...] about Quantitative Comparison – Number Properties & Theory