Indices & Surds: Definition of Surds
Any root of a rational number, which cannot be further simplified to remove the root, it is called as Surd or Radical. “Surds are irrational numbers.” Any expression containing a radical, whether it is...
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Any root of a rational number, which cannot be further simplified to remove the root, it is called as Surd or Radical. “Surds are irrational numbers.” Any expression containing a radical, whether it is...
An index (plural: indices) is the power or exponent of a number. For Example: has an index of 5. Here, by the term we basically mean p x p x p x p x p i.e product...
Articles / MBA / Number System / QA
by Wonder Boy · Published October 1, 2020 · Last modified September 12, 2021
Fraction : A fraction is a number in the form , where x & y are both integers and y 0. In the form , ‘x’ is called the numerator of the fraction and...
Articles / MBA / Number System / QA
by Wonder Boy · Published September 21, 2020 · Last modified September 12, 2021
Let’s discuss about the result when basic arithmetic operations are carried out on Even & Odd Numbers. 1. Sum of two Even numbers is always an Even Number.For Example: 4 + 6 = 10...
Articles / MBA / Number System / QA
by Wonder Boy · Published September 18, 2020 · Last modified September 12, 2021
In this post we will discuss about some Basic Arithmetic Operations: Addition, Subtraction, Multiplication and Division. Addition:Addition combines two quantities into a single quantity. It can be done with numbers, decimal or fractions. For...
Articles / MBA / Number System / QA
by Wonder Boy · Published May 17, 2020 · Last modified September 21, 2020
Co-Prime or Relatively Prime…HmmSo what do we mean by Co-Primes or Relatively Prime Nos. ?A set of numbers which do not have any other common factor other than 1 are called co-prime or relatively...
Though you must have read these concepts in school days. Lets just revise it again and practice sufficient questions to calculate GCD /HCF/LCM in few seconds which can be used to solve some tricky...
Articles / MBA / Number System / QA
by Wonder Boy · Published April 27, 2020 · Last modified May 9, 2020
Here we are going to learn about Digits, Integers, Even and Odd Integers, Operation on even and Odd integers, Factors & Multiples, Prime Numbers & Composite Numbers. In the next article on properties of...
Articles / MBA / Number System / QA
by Wonder Boy · Published April 19, 2020 · Last modified May 9, 2020
Imaginary Number: Since no real number satisfies the equation , a number of the form , where b is a real number, b 0 and is called an imaginary number. Since real numbers does...
Articles / MBA / Number System / QA
by Wonder Boy · Published April 15, 2020 · Last modified May 9, 2020
Rational Numbers: The rational numbers include all the integers, all fractions, terminating decimals and repeating decimals (We will discuss fractions and decimals later). Every rational number can be written in the form of fraction...
Fraction : A fraction is a number in the form , where x & y are both integers and y 0. In the form , ‘x’ is called the numerator of the fraction and...
Number : A number is a mathematical object to measure, count and label. Natural Number : The natural numbers are also called the counting numbers. The numbers 1,2,3,4 and so on are natural numbers....
Let’s take simultaneous equation with 3 variables. ……………(1) …………..(2) …………….(3) To solve simultaneous equation with 3 variables Step 1: Take 2 equations, say (1) & (2) to remove any one variable, say z. Mark...
Let’s take a pair of linear equation: ……………..(1) ……………..(2) With the help of coefficient of equations (1) & (2) we can easily determine if the solution of the simultaneous equations will be Unique Solution,...
Many CAT 2019 aspirants were waiting eagerly for the start of CAT application process. Registration for the test started at 10 A.M. on 7th, August 2019. The Indian Institutes of Management will conduct a...
Approach 2 : Substitution MethodIn this method, we express one of the variables in terms of the other in 1 of the equation and then substitute the value of the variable in the other...
Approach 1 : Elimination Method In this method we try to eliminate one of the two variables in the linear equations. After elimination, an equation with only one variable is left. Simplifying the equation,...
A set of 2 (or more) linear equations in 2 (or more) variables which are satisfied simultaneously by a same unique solution are called as Simultaneous Equations.e.g. 2x + 3y = 14and 2x –...
In CAT/GMAT/MBA/Other aptitude tests, there are verbal statements in which a problem is given. To solve the problem, we need to express it as algebraic equation. The unknown quantity is first considered as a...
Lets start with “What is an equation ?” It is a statement in which two algebraic expressions are equal. e.g. So, What is a “Linear equation” or Simple Equation”?An equation of the first order...
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Articles / Civil Services / MBA / QA
[CSAT][CAT] Basic Numeracy – Percentages (Tips & Tricks) – 1
30 Nov, 2014
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