Is 388 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 388 is composite or not first we have to find its factors.
Contents
Factors of 388:
- If we have taken numbers from 1, 2, 3…for checking factors of 388, we found that 388 has factors 1, 2, 4, 97, 194 and 388. Hence, we must say that 388 is a composite number.
- Thus, 388 is the composite umber.
- If we multiply 388 by 1, 2, 3 then we get the multiples of 388 which are 388, 776 and so on.
About the number 388:
- 388 has more than two factors which are 1, 2, 4, 97, 194 and 388 and hence it is the composite number.
- 388 is the even composite number and it is not the perfect square also.
- If we divide 388 by 1, 2, 4, 97, 194 and 388 then we get remainder as zero. Hence, 1, 2, 97, 194 and 388 are the factors of 388.
Note:
- 388 is not the perfect square.
- Factors of 388: 1, 2, 97, 194 and 388
- Prime factors of 388: 2, 97
Conclusion:
- 388 is the composite number which has factors 1, 2, 97, 194
- And hence, 388 is not the prime number.
Multiple Choice Questions:
1) 388 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 388 are
a) 2
b) 2, 97
c) 1, 194 and 388
d) 1, 2, 97, 194 and 388
Ans: c) 1, 194 and 388
3) 388 is the even composite number because
a) It has two factors
b) More than two factors
c) Divisible by 2
d) Both b and c
Ans: d) both b and c