Introduction to Numbers:
Hi everyone, This is the first class of Numbers, and it is a super important topic for any exam
that requires quantitative aptitude. Numbers are like an ocean, with many concepts and
applications. In this course, I will cover each and every concept of numbers, and I promise that
not a single question outside of notes will come in an exam.
The Three Parts of the Course
The course is divided into three parts:
Concept videos
Quizzes and their solutions
Previous year CAT questions and their solutions
If you cover all three parts, you will not find a single doubt in numbers, and my challenge is that
you will not miss a single question in the examination.
Classification of Numbers
Numbers are classified as real numbers and imaginary numbers. Imaginary numbers are not
relevant for CAT or any other aptitude exam, but it is useful to remember that they cannot be
represented on a number line. Iota is the only important imaginary number to remember,
which is equal to the square root of minus one.
Real numbers can be divided into two parts: rational numbers and irrational numbers. Rational
numbers can be written as p by q, where p and q belong to the set of integers, and q is not
equal to zero. Irrational numbers cannot be expressed in this form and are typically numbers
with an infinite decimal expansion that does not repeat in a pattern.
Rational numbers can be written in the form of p by q where p and q are integers and q is not
equal to zero. Irrational numbers cannot be written in this form and include numbers like root 2
and root 5. Recurring decimals with no fixed pattern are also irrational numbers.
Hi everyone, This is the first class of Numbers, and it is a super important topic for any exam
that requires quantitative aptitude. Numbers are like an ocean, with many concepts and
applications. In this course, I will cover each and every concept of numbers, and I promise that
not a single question outside of notes will come in an exam.
The Three Parts of the Course
The course is divided into three parts:
Concept videos
Quizzes and their solutions
Previous year CAT questions and their solutions
If you cover all three parts, you will not find a single doubt in numbers, and my challenge is that
you will not miss a single question in the examination.
Classification of Numbers
Numbers are classified as real numbers and imaginary numbers. Imaginary numbers are not
relevant for CAT or any other aptitude exam, but it is useful to remember that they cannot be
represented on a number line. Iota is the only important imaginary number to remember,
which is equal to the square root of minus one.
Real numbers can be divided into two parts: rational numbers and irrational numbers. Rational
numbers can be written as p by q, where p and q belong to the set of integers, and q is not
equal to zero. Irrational numbers cannot be expressed in this form and are typically numbers
with an infinite decimal expansion that does not repeat in a pattern.
Rational numbers can be written in the form of p by q where p and q are integers and q is not
equal to zero. Irrational numbers cannot be written in this form and include numbers like root 2
and root 5. Recurring decimals with no fixed pattern are also irrational numbers.
