Is 3988 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 3988 is composite or not first we have to find its factors.
Contents
Factors of 3988:
- If we have taken numbers from 1, 2, 3…for checking factors of 3988, we found that 3988 has factors 1, 2, 4, 997, 1994 and 3988. Hence, we must say that 3988 is a composite number.
- Thus, 3988 is the composite number.
- If we multiply 3988 by 1, 2, 3 then we get the multiples of 3988 which are 3988, 7976 and so on.
About the number 3988:
- 3988 has more than two factors which are 1, 2, 4, 997, 1994 and 3988 and hence it is the composite number.
- 3988 is the even composite number and it is not the perfect square also.
- If we divide 3988 by, 1, 2, 4, 997, 1994 and 3988 then we get remainder as zero. Hence, 1, 2, 4, 997, 1994 and 3988 are the factors of 3988.
Note:
- 3988 is not the perfect square.
- Factors of 3988: 1, 2, 4, 997, 1994 and 3988
- Prime factors of 3988: 2, 997
Conclusion:
- 3988 is the composite number which has factors, 1, 2, 4, 997, 1994 and 3988
- And hence, 3988 is not the prime number.
Multiple Choice Questions:
1) 3988 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 3988 are
a) 3988
b) 2, 997
c) 4, 1994 and 3988
d) 1, 2, 4, 997, 1994 and 3988
Ans: c) 4, 1994 and 3988
3) 3988 is composite number because
a) It has factors 1, 2, 4, 997, 1994 and 3988
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b