Is 308 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 308 is composite or not first we have to find its factors.
Contents
Factors of 308:
- If we have taken numbers from 1, 2, 3…for checking factors of 308, we found that 308 has factors 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308. Hence, we must say that 308 is a composite number.
- Thus, 308 is the composite umber.
- If we multiply 308 by 1, 2, 3 then we get the multiples of 308 which are 308, 616 and so on.
About the number 308:
- 308 has more than two factors which are 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308 and hence it is the composite number.
- 308 is the even composite number and it is not the perfect square also.
- If we divide 308 by 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308 then we get remainder as zero. Hence, 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308 are the factors of 308.
Note:
- 308 is not the perfect square.
- Factors of 308: 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308
- Prime factors of 308: 2, 7, 11
Conclusion:
- 308 is the composite number which has factors 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308
- And hence, 308 is not the prime number.
Multiple Choice Questions:
1) 308 is a
a) Prime number
b) Odd number
c) Composite number
d) Both b and c
Ans: c) composite number
2) The prime factors of a composite number 308 are
a) 2
b) 2, 7, 11
c) 152
d) 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154 and 308
Ans: b) 2, 7, 11
3) 308 is the even composite number as it has
a) Only two factors
b) It is divisible by 2
c) More than 2 factors
d) Both b and c
Ans: d) both b and c