Is 3928 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 3928 is composite or not first we have to find its factors.
Contents
Factors of 3928:
- If we have taken numbers from 1, 2, 3…for checking factors of 3928, we found that 3928 has factors 1, 2, 4, 8, 491, 982, 1964 and 3928. Hence, we must say that 3928 is a composite number.
- Thus, 3928 is the composite number.
- If we multiply 3928 by 1, 2, 3 then we get the multiples of 3928 which are 3928, 7856 and so on.
About the number 3928:
- 3928 has more than two factors which are 1, 2, 4, 8, 491, 982, 1964 and 3928 and hence it is the composite number.
- 3928 is the even composite number and it is not the perfect square also.
- If we divide 3928 by, 1, 2, 4, 8, 491, 982, 1964 and 3928 then we get remainder as zero. Hence, 1, 2, 4, 8, 491, 982, 1964 and 3928 are the factors of 3928.
Note:
- 3928 is not the perfect square.
- Factors of 3928: 1, 2, 4, 8, 491, 982, 1964 and 3928
- Prime factors of 3928: 2, 491
Conclusion:
- 3928 is the composite number which has factors, 1, 2, 4, 8, 491, 982, 1964 and 3928
- And hence, 3928 is not the prime number.
Multiple Choice Questions:
1) 3928 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 3928 are
a) 3928
b) 2, 491
c) 4, 8, 982, 1964 and 3928
d) 1, 2, 4, 8, 491, 982, 1964 and 3928
Ans: c) 4, 8, 982, 1964 and 3928
3) 3928 is composite number because
a) It has factors 1, 2, 4, 8, 491, 982, 1964 and 3928
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b