Tips and Tricks To Solve Problems on Races and Games
Races: A contest of speed in running, riding, driving, sailing or rowing is called a race. Race Course: The ground or path on which contests are made…
Important algebra identities and questions
Some Basic Formulae: (a + b)(a – b) = (a2 – b2) (a + b)2 = (a2 + b2 + 2ab) (a – b)2 = (a2 + b2 – 2ab) (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca) (a3 + b3) = (a + b)(a2 – ab + b2) (a3 – b3) = (a – b)(a2 + ab + b2) (a3 + b3 + c3 – 3abc)…
Tricks to solve surds and indices
Laws of Indices: am x an = am + n am = am – n an (am)n = amn (ab)n = anbn a n = an b bn a0 = 1 Surds:Let a be rational number and n be a positive integer such…
Tips to solve problems related to Chain Rule
Direct Proportion:Two quantities are said to be directly proportional, if on the increase (or decrease) of the one, the other increases (or decreases) to the…
Tips and Tricks on Simplification related problems in Aptitude
‘BODMAS’ Rule:This rule depicts the correct sequence in which the operations are to be executed, so as to find out the value of given expression.Here…
Tricks to Solve Equations in two variables
Solving systems of equations in two variables A system of a linear equation comprises two or more equations and one seeks a common solution to…
Tips to solve Permutation and Combination Problems
Factorial Notation:Let n be a positive integer. Then, factorial n, denoted n! is defined as: n! = n(n – 1)(n – 2) … 3.2.1. Examples: We define 0! = 1.…
Aptitude Tricks – Surds and Indices
SURDS AND INDICES Important Terms Surd: Number which cannot be expressed in the fraction form of two integers is called as surd. Hence, the numbers…
Order of Operations in Maths | PEMDAS, PEDMAS, BODMAS
Order of Operations in Maths | PEMDAS, PEDMAS, BODMAS The basic operations in mathematics, as everyone knows, are addition, subtraction, multiplication and division. In algebra,…
Short Tricks to Solve Problems on Area
FUNDAMENTAL CONCEPTS Results on Triangles: Sum of the angles of a triangle is 180°. The sum of any two sides of a triangle is greater…