Numbers and Number systems is one of the most tested topics in GMAT Quant section.  This course will cover all the basics of number systems and equip the learners with tricks which will help them to solve the complex GMAT problems. A clear knowledge of Numbers and Number systems will help the learners not only do well in numbers related problems but also in other problems in the Quant section as the concepts will need to be applied in many problems across the Quant section.

Dormant

English

Numbers And Number Systems

Fractions

Arithmetic

Quantitative Aptitude

Testing

Ace the toughest competitive and government exams in India 

Test Preparation

A course overview on Numbers and Number systems mentioning the objectives of the course,  the topics to be discussed and the expectations from the learners.

Overview

This lesson covers the basic concepts of number and number systems such as types of numbers,  prime numbers and divisibility rules.

Basics of Number and Number Systems

This lesson is about the first type of last digit problems in GMAT  - last digits involving very large multiplications

GMAT Last Digit Problems - 1

This lesson is about last digit problems asked in GMAT involving cyclicity of numbers. The concepts of cyclicity and how they can be used to solve tricky GMAT problems is presented.

GMAT Last Digit Problems - 2

This lesson is the third and last chapter on last digit problems asked in GMAT. The concepts required to solve questions which ask for last two digit of big multiplication are presented.

GMAT Last Digit Problems - 3

This lesson covers the laws of exponents and explains how to deal with problems in GMAT which ask for highest prime factors of a number or asks for finding out the largest among numbers when they are expressed in exponent form.

Exponents - 1

The second lesson on exponents deals with data sufficiency questions involving exponents. A clear understanding of the types of bases and their behaviour with exponents is essential to see such data sufficiency questions.

Exponents - 2

This is the first lesson on factors and multiples. Methods of factorization,  finding number of factors,  number of odd factors and Number of even factors and difference between odd and even factors has been presented.

Factors and Multiples - 1

This is the second lesson on factors and multiples. Commonly asked GMAT problem solving and data sufficiency sample questions are solved in this lesson.

Factors and Multiples - 2

This is the third lesson on Factors and Multiples. Concepts and tricks to solve tricky GMAT (700+) problem solving and data sufficiency questions have been presented.

Factors and Multiples - 3

This lesson is on LCM and GCF.  While GMAT may not ask direct questions on LCM and GCF,  the concepts need to clear as the applications of LCM and GCF will be required in other types of problems.

LCM and GCF

This lesson on number system is about a particular type of problem often asked in GMAT involving Factorials and Highest Powers

Factorials and Highest Powers

This lesson is on the concept of terminating and reoccurring number questions asked in GMAT. The tricks involved to solve such questions are discussed.

Terminating and Reoccurring Numbers

Remainders are one of the favorite topics of GMAT. In the first lesson on remainders,  we talk about how the very basic definition of remainders can be used to solve some very tricky problems in GMAT.

Remainders - 1

This is the second lesson on remainders. Remainders is one of the most commonly asked questions in the GMAT and hence it is very helpful to know the tricks.

Remainders - 2

This is the third lesson on remainders and deals with a particular type of remainder problem commonly asked in GMAT.

Remainders - 3

This is the last lesson on Remainders. This lesson talks about a certain type of problem asked in GMAT involving the concepts of LCM and remainders.

Remainders - 4

We start practicing with GMAT questions involving  number systems in this lesson. All the concepts learnt so far can be applied to solve these questions,  although some new tricks are taught.

GMAT 650-700 Type Problems

More GMAT 650-700 level Quant questions are practiced in this lesson. Please go through and try to identify the concepts involved which will help you to solve tricky GMAT problems.

GMAT 650-700 Problems

This lesson solves 2 type of commonly asked GMAT problems.  The problems may seem long. However the basic concepts of number systems can be applied to solve these problems.

GMAT 700+ Questions - 1

1 problem solving and 2 data sufficiency questions at GMAT 700+ level are discussed in this lesson.

GMAT 700+ Questions - 2

I have been associated with Unacademy for last 3 years. During these 3 years I have taken up roles like Plus Educator for GMAT, CAT &SME for

Sounak Kundu

Quantitative Aptitude for GMAT is discussed in this course

Quantitative Aptitude for GMAT

An experienced Quantitative Aptitude Trainer / Handling various courses such as CAT, GMAT, GRE, SAT, SSC, BANK EXAMS etc./ Specialist in con

Sivaprasad S

This ia a interesting and detailed course on LCM and HCF will give you a thorough conceptual foundation and complete overview about LCM, HCF, their properties and applications.

All about LCM and HCF for Your GMAT Quants

I am working as MATHS LECTURER( MSC maths ) since  25 years teaching to INTER I & II years , IIT MATHS also QA subject for TEST PREPARATIONS

Panyam Satyanarayana Varma

This course covers questions related to Data Sufficiency, Percentage, Average,etc.

How to Solve Quant Problems for GMAT and MBA

Expert in covering syllabus via MCQ's || Unacademy Educator || 7 years of work experience

Pooja Singhal

The course discusses Basic Properties of integers with examples.

GMAT Quant Number System and Algebra

BE graduate with 2+ years of experience in IT Industry. 2 years of experience into teaching.

Tanzia Naaz

In this course , Tanzia Naaz will be covering questions on Data Sufficiency  (Quantitative ) which will be helpful in competitive exams.

Part 1 - Data Sufficiency

In this course , Tanzia Naaz will be discussing different questions on data sufficiency

Lessons

21 lessons • 3h 19m

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Overview

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Basics of Number and Number Systems

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GMAT Last Digit Problems - 1

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GMAT Last Digit Problems - 2

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GMAT Last Digit Problems - 3

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Exponents - 1

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Exponents - 2

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Factors and Multiples - 1

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Factors and Multiples - 2

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Factors and Multiples - 3

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