Is 3970 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 3970 is composite or not first we have to find its factors.
Contents
Factors of 3970:
- If we have taken numbers from 1, 2, 3…for checking factors of 3970, we found that 3970 has factors 1, 2, 5, 10, 397, 794, 1985 and 3970. Hence, we must say that 3970 is a composite number.
- Thus, 3970 is the composite number.
- If we multiply 3970 by 1, 2, 3 then we get the multiples of 3970 which are 3970, 7940 and so on.
About the number 3970:
- 3970 has more than two factors which are 1, 2, 5, 10, 397, 794, 1985 and 3970 and hence it is the composite number.
- 3970 is the even composite number and it is not the perfect square also.
- If we divide 3970 by, 1, 2, 5, 10, 397, 794, 1985 and 3970 then we get remainder as zero. Hence, 1, 2, 5, 10, 397, 794, 1985 and 3970 are the factors of 3970.
Note:
- 3970 is not the perfect square.
- Factors of 3970: 1, 2, 5, 10, 397, 794, 1985 and 3970
- Prime factors of 3970: 2, 5, 397
Conclusion:
- 3970 is the composite number which has factors, 1, 2, 5, 10, 397, 794, 1985 and 3970
- And hence, 3970 is not the prime number.
Multiple Choice Questions:
1) 3970 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 3970 are
a) 3970
b) 2, 5, 397
c) 10, 794, 1985 and 3970
d) 1, 2, 5, 10, 397, 794, 1985 and 3970
Ans: c) 10, 794, 1985 and 3970
3) 3970 is composite number because
a) It has factors 1, 2, 5, 10, 397, 794, 1985 and 3970
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b