Is 3880 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 3880 is composite or not first we have to find its factors.
Contents
Factors of 3880:
- If we have taken numbers from 1, 2, 3…for checking factors of 3880, we found that 3880 has factors 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880. Hence, we must say that 3880 is a composite number.
- Thus, 3880 is the composite number.
- If we multiply 3880 by 1, 2, 3 then we get the multiples of 3880 which are 3880, 7760 and so on.
About the number 3880:
- 3880 has more than two factors which are 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880 and hence it is the composite number.
- 3880 is the even composite number and it is not the perfect square also.
- If we divide 3880 by, 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880 then we get remainder as zero. Hence, 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880 are the factors of 3880.
Note:
- 3880 is not the perfect square.
- Factors of 3880: 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880
- Prime factors of 3880: 2, 5, 97
Conclusion:
- 3880 is the composite number which has factors, 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880
- And hence, 3880 is not the prime number.
Multiple Choice Questions:
1) 3880 is a
a) Prime number
b) Even number
c) Composite number
d) Both b and c
Ans: d) both b and c
2) The composite factors of a composite number 3880 are
a) 3880
b) 2, 5, 97
c) 4, 8, 10, 20, 40, 194, 388, 485, 776, 970, 1940 and 3880
d) 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880
Ans: c) 4, 8, 10, 20, 40, 194, 388, 485, 776, 970, 1940 and 3880
3) 3880 is composite number because
a) It has factors 1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940 and 3880
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b