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NUMBER SYSTEM

 

NUMBERS 

1, 2, 3, 5, 7, 11, 13, 17, 19,23, 29, ... Numbers that are divisible by numbers other than 1 and themselves are called composite numbers. 

A composite number has more than 2 factors. Just as natural numbers extend infinitely to the right of 0, numbers extend infinitely to the left of 0 as well.

 WHOLE NUMBERS - In mathematics, whole numbers are the basic counting numbers 0, 1, 2, 3, 4, 5, 6, … and so on. 17, 99, 267, 8107 and 999999999 are examples of whole numbers. Whole numbers include natural numbers that begin from 1 onwards. Whole numbers include positive integers along with 0


PRIME NUMBERS -
Prime numbers are numbers that have only 2 factors: 1 and themselves. For example, the first 5 prime numbers are 2, 3, 5, 7, and 11. By contrast, numbers with more than 2 factors are call composite numbers.

 

EVEN NUMBERS -Even numbers are those numbers that can be divided into two equal groups or pairs and are exactly divisible by 2. For example, 2, 4, 6, 8, 10 and so on.

 

ODD NUMBERS - Odd numbers are whole numbers that cannot be divided exactly into pairs. Odd numbers, when divided by 2, leave a remainder of 1. ... Odd numbers have the digits 1, 3, 5, 7 or 9 in their ones place. Fun Facts. The sum of two odd numbers is always even.

 

 

COMPOSITE NUMBERS - A composite number is a positive integer. which is not prime (i.e., which has factors other than 1 and itself). The first few composite numbers (sometimes called "composites" for short) are 4, 6, 8, 9, 10, 12, 14, 15, 16, ... (OEIS A002808), whose prime decompositions are summarized in the following table.

 

NATURAL  NUMBERS - Natural numbers are all positive numbers like 1, 2, 3, 4, and so on. They are the numbers you usually count and they continue till infinity. Whereas, the whole numbers are all natural numbers including 0, for example, 0, 1, 2, 3, 4, and so on. Integers include all whole numbers and their negative counterpart.

 

CO-PRIME NUMBERS - Two numbers or integers are co-prime if their common factor is only 1. There should be a minimum of two numbers to form a set of coprime numbers. Such numbers have only 1 as their highest common factor, for example, {4 and 7}, {5, 7, 9} are coprime numbers.

 

 

REAL NUMBERS - Real numbers are the numbers which include both rational and irrational numbers. Rational numbers such as integers (-2, 0, 1), fractions(1/2, 2.5) and irrational numbers such as 3, π(22/7), etc., are all real numbers.

 

 

RATIONAL NUMBERS - rational number is a type of real numbers, which is in the form of p/q where q is not equal to zero. Any fraction with non-zero denominators is a rational number. Some of the examples of rational number are 1/2, 1/5, 3/4, and so on. ... But, 1/0, 2/0, 3/0,

 

 

IRRATIONAL NUMBERS - Irrational numbers are the real numbers that cannot be represented as a simple fraction. It cannot be expressed in the form of a ratio, such as p/q, where p and q are integers, q0. ... For example, 5, 11, 21, etc., are irrational.

 

INTEGER NUMBER - An integer (from the Latin integer meaning "whole") is colloquially defined as a number that can be written without a fractional component. For example, 21, 4, 0, and 2048 are integers, while 9.75, 512, and 2 are not.

 

CLOSURE NUMBERS - The closure property means that a set is closed for some mathematical operation. ... For example, the set of even natural numbers, [2, 4, 6, 8, . . .], is closed with respect to addition because the sum of any two of them is another even natural number, which is also a member of the set.


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अब मै आशा करता हूँ कि आप बताए गए सभी Points को अच्छे से समझ गए होंगें । यदि फिर भी कोई points समझ मे नहीं आया हो । तो आप "Comment" करके हमसे पूछ सकते हैं ।

आपको यह पोस्ट कैसा लगा हमें नीचे "Comment" करके अवश्य बताएं और यदि इस पोस्ट मे कोई कमी हो तो उसे भी Comment मे लिखें और यदि आपको यह पोस्ट helpful लगा हो, तो अपने friends और दूसरे Students के साथ Share अवश्य करें । ताकि वो सब भी इस पोस्ट को पढकर सीख सकें ।


यदि आप पिछले या फिर Next --- Daily use English Sentence बाले पोस्ट को पढना चाहते हैं, तो नीचे दिए गए link पर click करके पढें ।

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