Page 96 - Number System (संख्यां पध्दति)
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• What is called digit?
Answer:- The signs (0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 ) we use to express a number are called digit .
• What is the decimal system?
Answer:- The group of all the numbers is called the decimal system.
Example :- 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9
Note:- 1, 2, 3, 4, 5, 6, 7, 8, 9 are called significant numbers while zero (0) is called non-significant number.
• What is Number System?
Answer:- The correct and orderly method of making numbers using different numbers and writing numbers and naming them is called number system.
Number systems are classified into the following categories.
(1) प्राकृतिक संख्या {Natural Number}
(2) सम संख्या {Even Number}
(3) विषम संख्या {Odd Number}
(4) पूर्ण सांख्य {Whole Number}
(5) पूर्णांक संख्या {Integers}
(6) भाज्य संख्या {Composite Number}
(7) अभाज्य संख्या {Prime Number}
(8) सह अभाज्य संख्या {Co-Prime Number}
(9) सम्पूर्ण संख्या {Perfect Number}
(10) अभाज्य युग्म संख्या / जुड़वा अभाज्य {Twine Prime Number}
(11) परिमेय संख्या {Rational Number }
(12) अपरिमेय संख्या {Irrational Number}
(13) वास्तविक संख्या {Real Number}
(14)अवास्तविक संख्या {Unreal Number}
