Is 3930 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 3930 is composite or not first we have to find its factors.
Contents
Factors of 3930:
- If we have taken numbers from 1, 2, 3…for checking factors of 3930, we found that 3930 has factors 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930. Hence, we must say that 3930 is a composite number.
- Thus, 3930 is the composite number.
- If we multiply 3930 by 1, 2, 3 then we get the multiples of 3930 which are 3930, 7860 and so on.
About the number 3930:
- 3930 has more than two factors which are 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930 and hence it is the composite number.
- 3930 is the even composite number and it is not the perfect square also.
- If we divide 3930 by, 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930 then we get remainder as zero. Hence, 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930 are the factors of 3930.
Note:
- 3930 is not the perfect square.
- Factors of 3930: 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930
- Prime factors of 3930: 2, 3, 5, 131
Conclusion:
- 3930 is the composite number which has factors, 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930
- And hence, 3930 is not the prime number.
Multiple Choice Questions:
1) 3930 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 3930 are
a) 3930
b) 2, 3, 5, 131
c) 6, 10, 15, 30, 262, 393, 655, 786, 1310, 1965 and 3930
d) 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930
Ans: c) 6, 10, 15, 30, 262, 393, 655, 786, 1310, 1965 and 3930
3) 3930 is composite number because
a) It has factors 1, 2, 3, 5, 6, 10, 15, 30, 131, 262, 393, 655, 786, 1310, 1965 and 3930
b) It has more than two factors
c) Divisible by 2
d) Both a and b
Ans: d) both a and b