Is 1880 is a composite number or not ?
- As we already know that, the number having factors 1 and the number itself is the prime number.
- And numbers having more than these two factors are the composite numbers.
- To check whether the number 1880 is composite or not first we have to find its factors.
Contents
Factors of 1880:
- If we have taken numbers from 1, 2, 3…for checking factors of 1880, we found that 1880 has factors 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880. Hence, we must say that 1880 is a composite number.
- Thus, 1880 is the composite number.
- If we multiply 1880 by 1, 2, 3 then we get the multiples of 1880 which are 1880, 3760 and so on.
About the number 1880:
- 1880 has more than two factors which are 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880 and hence it is the composite number.
- 1880 is the even composite number and it is not the perfect square also.
- If we divide 1880 by, 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880 then we get remainder as zero. Hence, 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880 are the factors of 1880.
Note:
- 1880 is not the perfect square.
- Factors of 1880: 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880
- Prime factors of 1880: 2, 5, 47
Conclusion:
- 1880 is the composite number which has factors 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880
- And hence, 1880 is not the prime number.
Multiple Choice Questions:
1) 1880 is a
a) Prime number
b) Odd number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The non-prime factors of a composite number 1880 are
a) 1880
b) 2, 5, 47
c) 1, 4, 8, 10, 20, 40, 94, 188, 235, 376, 470, 940 and 1880
d) 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880
Ans: c) 1, 4, 8, 10, 20, 40, 94, 188, 235, 376, 470, 940 and 1880
3) 1880 is composite number because
a) It has factors 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: a) it has factors 1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940 and 1880