Types of number
Natural Number(Prakrit Sankhya)- Ginti ki sankhya ko prakrit sankhya ya natural number kahte hain. Ex. -1,2,3,4,5,6, 7, 8,9...
☆ Sabse chhoti prakrit sankhya 1 aur sabse badi prakrit sankhya nikalna possible nahi hain.
Whole Number( पूंणॆ संख्या ) - Natural number ya prakrit sankhya me 0 ank ko milane se bani sankhya family ko , Whole number kahte hain. Example - 0 , 1, 2, 3, 4, 5 ,6 ,7 ,8 ,9.....
☆ Sabse chhoti whole number 0 hain aur sabse badi whole number nikalna Sambhav possible nahi hain.
Odd Number ( सम संख्या ) - Waisi natural number ya prakrit sankhya jo 2 se pura ka pura divide ho jaaye, ya 2 se pura bhaag lag jaye. odd number kahlati hain. Example - 2, 4, 6, 8, 10.....
Note; odd number ke ekaai ank ke ashthan (place ) par 0, 2, 4, 6, 8 aate hain.
Even Number (विषम संख्या ) - Waisi natural number ya prakrit sankhya jo 2 se pura ka pura divide na ho , ya 2 se bhaag dene par kuchh shesh rah jaaye, Even Number ya Visham sankhya kahlati hain. Ex- 1, 3, 5, 7, 9, 11, 13, 15,.....
Note; even number ya visham sankhya ke ekaai ank ke ashthan (place) par 1, 3, 5, 7, 9 aate hain.
Composite Number ( भाज्य संख्या ) - Waisi natural numbers ya prakrit sankhyaye , Jo 1 aur khud ke siwa kisi bhi dusari sankhya se divide ho , composite number kahlati hain.
Ex. - 4, 6, 8, 9, 10, 12, 14...
Prime Number ( अभाज्य संख्या )-
1 se badi waisi prakrit sankhya ( Natural Number ) jo 1 aur khud ke siva kisi bhi dusari sankhya se pura ka pura divide na ho , prime number kahlati hain.
Ex.- 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97.
Note - 1 se 100 tak ki ye 25 Prime numbers hain.
Co-prime numbers (सह- अभाज्य संख्या ) -
Jin do natural numbers ka highest common factor (HCF) 1 ho , to woh dono sankhyaye (numbers) co-prime numbers kahlati hain.
Ex - 4-5, 5-7, 4-9, 12-13, 1-5 etc.
Note - Do kramagat prakrit sankhaye sah-abhajya hoti hain.
Integer Number ( पूणांकॆ संख्या ) -
Waisi prakrit sankhya jiske sabhi gunankhandon ( Factor)
ka yog (addition ) sankhya maan se duguna ho , Integer numbers kahlati hain.
Example - 6, 28 ( note; 1 se 100 ke bich do hi purna sankhya )
6 ke gunankhand (factor) ka yog = 1+2+3+6 = 12
28 ke gunankhand ka yog = 1+2+4+7+14+28 = 56
