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CBSE Class 10 Answered

 
Asked by mrinalini mrinalini | 09 Apr, 2014, 07:25: PM
answered-by-expert Expert Answer
Composite numbers are numbers having factors other than 1 and the number it self.
 
Consider the number 36.
 
We can write 36 as:
 
36 equals 36 cross times 1 space space space space space equals 18 cross times 2 space space space space space equals 12 cross times 3 space space space space space equals 9 cross times 4 space space space space space equals 6 cross times 6 space space space space space equals 3 cross times 12 space space space space space equals 2 cross times 18 space space space space space equals 1 cross times 36
 
Thus 36 is having factors, 1, 2, 3, 4, 6, 9, 12, 18, 36.
 
Hence 36 is a composite number.
 
Consider the number 13.
 
We can write 13 as:
 
13 equals 1 cross times 13 space space space space equals 13 cross times 1
 
Here 13 is expressed as the product of 1 and 13 and 13 cannot be expressed as the product of other numbers.
Thus 13 is a prime number.
Answered by | 09 Apr, 2014, 09:18: PM

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