Mathematics Simplified (3) Now let’s discuss different type of - TopicsExpress

Mathematics Simplified (3) Now let’s discuss different type of numbers, if you are wondering how there different type of numbers, it’s the same as letters you have vowels and consonants. Now let’s List the main types of numbers, • Natural numbers The counting numbers {1, 2, 3 ...}, are called natural numbers. They include all the counting numbers i.e. from 1 to infinity. • Whole numbers They are the natural numbers and zero. Not all whole numbers are natural numbers, but all natural numbers are whole numbers. • Integers Positive and negative counting numbers, as well as zero. • Rational numbers Numbers that can be expressed as a fraction of an integer and a non-zero integer.[1] • Real numbers All numbers that can be expressed as the limit of a sequence of rational numbers. Every real number corresponds to a point on the number line. • Irrational numbers A real number that is not rational is called irrational. • Complex numbers Includes real numbers and imaginary numbers, such as the square root of negative one. There are several ways to write a Number same thing as fonts and phonetic alphabets in linguistics. • Decimal The standard Hindu–Arabic numeral system using base ten. Example: 0,1,2,3,4,5,6,7,8,9 • Binary This is a special representation that is mainly used in computers. You see unlike the common notion computers are not that smart, they can only understand two things, ON & OFF. The numerical representation is 0 & 1, and through what is known as Binary arithmetic we can represent our normal numeral system • Roman numerals The numeral system of ancient Rome, still occasionally used today. Example: I, II, III , IV , etc… • Fractions A representation of a non-integer as a ratio of two integers. These include improper fractions as well as mixed numbers. • Scientific notation A method for writing very small and very large numbers using powers of 10. When used in science, such a number also conveys the precision of measurement using significant figures. Now there is the scale of values can be divided according to the “sign” of the number. A simple way to think about the “sign” is does the number represent increase “hence +”, decrease “hence –“or no change “0” • Positive numbers Real numbers that is greater than zero. • Negative numbers Real numbers that are less than zero. Because zero itself has no sign, neither the positive numbers nor the negative numbers include zero. When zero is a possibility, the following terms are often used: • Non-negative numbers Real numbers that are greater than or equal to zero. Thus a non-negative number is either zero or positive. • Non-positive numbers Real numbers that are less than or equal to zero. Thus a non-positive number is either zero or negative. Based on some arithmetic operation we can classify the types of integers, think of it as a fun game, that we can use to classify the characteristics of Integers in order to simplify the arithmetic operations. • Even and odd numbers A number is even if it is a multiple of two, and is odd otherwise. • Prime number A number with exactly two positive divisors. • Composite number A number that can be factored into a product of smaller integers. Every integer greater than one is either prime or composite. • Square number Numbers that can be written as the square of an integer. Stay tuned for the next post where we concentrate on the magical world of complex numbers. Until then take care. Omar El-Sewefy