Is 392 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 392 is composite or not first we have to find its factors.
Contents
Factors of 392:
- If we have taken numbers from 1, 2, 3…for checking factors of 392, we found that 392 has factors 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392. Hence, we must say that 392 is a composite number.
- Thus, 392 is the composite umber.
- If we multiply 392 by 1, 2, 3 then we get the multiples of 392 which are 392, 784 and so on.
About the number 392:
- 392 has more than two factors which are 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392 and hence it is the composite number.
- 392 is the even composite number and it is not the perfect square also.
- If we divide 392 by 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392 then we get remainder as zero. Hence, 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392 are the factors of 392.
Note:
- 392 is not the perfect square.
- Factors of 392: 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392
- Prime factors of 392: 2, 7
Conclusion:
- 392 is the composite number which has factors 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392
- And hence, 392 is not the prime number.
Multiple Choice Questions:
1) 392 is a
a) Prime number
b) Odd number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The non-prime factors of a composite number 392 are
a) 2
b) 2, 7
c) 1, 4, 8, 14, 28, 49, 56, 98, 196 and 392
d) 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196 and 392
Ans: c) 1, 4, 8, 14, 28, 49, 56, 98, 196 and 392
3) 392 is the composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: b) more than two factors