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Real Numbers 9th and 10th

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💯👩‍🏫      💯👩‍🏫            💯👩‍🏫         💯👩‍🏫      💯👩‍🏫  Hello friends welcome to ayushagarwal_maths page. Are you preparing for board exams or competitive exams than you are at the right place to enhance your knowledge.                             REAL NUMBERS  Real numbers - Real numbers are the numbers which can be obtained on the number line. Real numbers are denoted by 'R'. They includes Natural numbers, Whole numbers, Integers, Rational numbers, Irrational numbers.  Natural numbers - Natural numbers are the counting and ordering numbers (excluding 0) i.e. N = { 1, 2, 3, 4, 5, .......... } Whole numbers- Whole numbere are collection of natural numbers including zero (0) i.e. W = {0, 1, 2, 3, 4, 5, ........ }  Integers - Integers consist of natural numbers, their negatives and zero i.e. Z = { ....... -3, -2, -1, 0, 1, 2, 3, 4, 5, ........... }  Prime numbers - A prime number is defined as a number that has no factor other than 1 and its

Number System

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                      Number System Natural Numbers - Counting numbers are called natural numbers.  •  The least natural number is 1.  • There are infinitely many natural numbers.  Whole Numbers - All natural numbers together with 0 form the collection of all whole numbers.  • The least whole number is 0.  • There are infinitely many whole numbers.  • Every natural number is a whole number.  • All whole numbers are not natural numbers, as 0 is a whole number which is not a natural number.  Integers -   All natural numbers, 0 and negatives of natural numbers form the collection of all integers.  • 0 is neither negative nor positive.  • There are infinitely many integers.  • Every natural number is an integer.  • Every whole number is an integer.  SSC previous year questions (Important)  Q. 1. Which of the following fraction is the greatest? 2/3 , 5/6 , 11/15 , and 7/8 A). 7/8 B). 11/15 C).  5/6 D). 2/3 Q. 2. If a number is as much greater than 31 as it is less than 75, then