Which factors are not included in the prime factorisation of a composite number?
Pawan Prajapati , 4 Years ago
Grade 12
7 grade maths> Which factors are not included in the pri...
2 AnswersHarshit Singh
Last Activity: 4 Years ago
Dear Student
1 and the number itself are not included in the prime factorisation of a composite number.
Thanks
Ram Kushwah
Last Activity: 4 Years ago
First Let us understand what are composite numbers ?
Composite numbers are the natural numbers which are divisible by at least one number
except 1 and itself.
Takig exapmles
15= 3 x 5 ( 15 is divisible by 3 and 5 except 1 and 15 itself)
30=2 x 3 x 5 ( 30 is divisible by 2,3 and 5 except 1 and 30 itself)
Now note down in
42=2 x 3 x 7
So (i) prime factors of 42 are 2, 3 and 7
(ii)42 is divisible by 42 itself and 1 are also but not included in the prime factors
Thus
In the prime factorization of a composite number
Following are not included
(i) The composite number itself
and (ii) 1
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