GMAT MATH ULTIMATE EXAM QUESTIONS AND ANSWERS

GMAT MATH ULTIMATE EXAM QUESTIONS AND ANSWERS Consecutive Integers - Answer-Even: 2n, 2n + 2, 2n + 4 Odd: 2n + 1, 2n + 3, 2n + 5 Properties of Zero - Answer-Zero is an even integer. Zero is neither positive nor negative. Zero is a multiple of every number. Zero is a factor of no number. FOIL Method with Quadratics with Roots - Answer-Use FOIL Method with Quadratics with Roots n − 4√n + 4 = (√n − 2) (√n − 2) = x2 − 4x + 4 Similar Triangle Areas - Answer-The ratio of the areas of two similar triangles is the *square* of the ratio of corresponding lengths. Triangle ABC has sides AB = 2 and AC = 4. Each side of triangle DEF is 2 times the length of corresponding triangle ABC (DE = 4, DF = 8) Triangle DEF must have 2x2, or 4, times the area of triangle ABC. Exterior Angles in Triangles - Answer-Exterior angle d is equal to the sum of the two remote interior angles a and b. d = a + b Gross vs. Net - Answer-Gross is the total amount before any deductions are made. Net is the amount after deductions are made. Useful Percentages to Know - Answer-1/8 = 12.5% 1/6 = 16.6% 2/3 = 66.6% 5/6 = 83.3% Odds and Evens - Answer-Odd + Odd = Even Even + Even = Even Odd + Even = Odd Odd × Odd = Odd Even × Even = Even Odd × Even = Even Simplify the Base of Exponential Expression - Answer-Always try to simplify the base