आपकी एक छोटी सी मदद किसी की जिंदगी बदल सकती है।

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Notes created by: Mr. Shashank newaskar

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Introduction of mathematics

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Number system

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    Notes created by- Mr. Shashank newaskar                             NUMBER SYSTEM 1. Natural Number -All positive counting number’s which start from 1 and goes up to  +∞ (Plus infinity) that number’s are called Natural Number. We represent natural numbers by  “  N  ”            Example-  1,   2,   3,   4,   5   ……………………+∞ 2. Whole number - All positive counting number’s which start from 0 and goes up to  +∞ (Plus infinity) that number’s are called Whole Number. We represent Whole numbers by  “  W  ”     Example-  0,   1,   2,   3,   4,   5   ……………………+∞ 3. Integer number - Those number’s which start from -∞(Minus infinity) and goes up to  +∞ (Plus infinity) that number’s are called Integer Numbers. We represent Integer numbers by  “  Z  ” Example-    -∞ ……….. -3,  -2,  -1,     0,   1,   2,   3,……………+∞ Note : Integer numbers may be negative ,  may be zero ,  or may be positive numbers. 4. Even number  - An Even number is an integer that can be divided by two (2). Example-    2 ,  4
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