| 26th October 2016 05:37 PM | |
| shikha | Re: GMAT Math Formulas As per your concern I will get the list of GMAT Math formulas so that you can get idea and prepare easily. Here are the formulas Algebra Formulas Exponential Equations xn*xm = xn + m (xn)/(xm) = x n - m (x/y)n = (xn)/(yn) xn*yn = (xy)n (xy)z = xyz x-n = 1/(xn) 1n = 1 x0 = 1 0n = 0, except 00 = 1 or undefined FV = CV(1 + g)T Interest Simple Interest = P*r*t P = starting principle; r = annual interest rate; t = number of years Annual Compound Interest = P(1+r)t Compound Interest = P(1 + r/x)xt x = number of times the interest compounds over the year Other Distance = Rate*Time Wage = Rate*Time Arithmetic Formulas Combinatorics Combinations:nCk = n!/((n-k)k!)! Permutations:nPk = n!/(n-k)! Circular: (n-1)! k = number of objects selected from a pile of n objects n = total number of objects from which k objects can be selected Fractions (a/b)/(c/d) = (a/b) * (d/c) Percents Percent Change, as a decimal = (New - Old)/Old N = (1 + G)O; N = New Value, 0 = Old Value, G = Growth Rate as decimal Probability Probability that event E occurs = P(E) = (Number of outcomes in E) / (Total number of possible outcomes) P(not E) = 1 - P(E) P(E or F) = P(E) + P(F) - P(E and F) P(E and F) = P(E)P(F) Number Properties (Odd)(Even) = Even (Odd)(Odd) = Odd (Even)(Even) = Even (Odd) ± (Even) = Odd (Odd) ± (Odd) = Even (Even) ± (Even) = Even (Positive)(Positive) = Positive (Positive)(Negative) = Negative (Negative)(Negative) = Positive (Positive)/(Negative) = Negative (Positive)/(Positive) = Positive (Negative)/(Negative) = Positive Statistics Average (Arithmetic Mean): (sum of all numbers)/(number of numbers) Median: the middle number (or average of the two middle numbers if there are an even number of figures) when all values are arranged in ascending order Mode: the mos frequently occuring value in a dataset Geometry Formulas Angles Sum of Interior Angles of Polygon = (n-2)(180) n = number of sides of a polygon Central Angle = 2(Inscribed Angle) Area Square: A = a2 Rectangle: A = lw Parallelogram: A = bh Trapezoid: A = .5(a+c)h, where a and c are the lengths of the parallel sides Circles π = pi = 3.1415 Area: A = πr2 Circumference: C = 2πr Central Angle = 2(Inscribed Angle) Area of Sector = (x/360)πr2 Perimeter Square: P = 4l Rectangle: P = 2w + 2l Parallelogram: P = 2b + 2a, where a and b are the lengths of the non-parallel sides Circle: P = 2πr Triangles Area: A = .5bh Pythagorean Theorem: A2 + B2 = C2 where A = one leg, B = the other leg, C = hypotenuse Volume Cube: V = a3 where a is the length of a side Rectangular Solid: V = hwl Cylinder: V = πr2h |
| 26th October 2016 05:07 PM | |
| Unregistered | GMAT Math Formulas Can you please get the list of GMAT Math formulas so that I can prepare for exam easily? |
