Is 16 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 16 is composite or not first we have to find its factors.
Contents
Factors of 16:
- If we have taken numbers from 1, 2, 3…for checking factors of 16, we found that 16 has factors 1, 2, 4, 8 and 16. Hence, we must say that 16 is a composite number.
- Thus, 16 is the composite number.
- If we multiply 16 by 1, 2, 3, then we get the multiples of 16 which are 16, 32, 48…and so on.
About the number 16:
- 16 has more than two factors which are 1, 2, 4, 8 and 16 and hence it is the composite number.
- 16 is the even composite number and it isthe perfect square also.
- If we divide 16 by 1, 2, 4, 8 and 16 then we get remainder as zero. Hence, 1, 2, 4, 8 and 16 are the factors of 16.
Note:
- 16 is the perfect square.
- Factors of 16: 1, 2, 4, 8,16
- Prime factors of 16: 2
Conclusion:
- 16 is the composite number which has factors 1, 2, 4, 8 and 16.
- And hence, 16 is not the prime number.
Multiple Choice Questions:
1) 16 is a
a) even number
b) Prime number
c) Composite number
d) Both a and c
Ans: d) both a and c
2) The prime factors of a composite number 16 are
a) 1
b) 2
c) Both a and b
d) 161
Ans: b) 2
3) 1 is the not prime factor of 16 because
a) It is the prime number
b) 1 is neither prime nor composite number
c) Both a and b
d) Given statement is false
Ans: b) 1 is neither prime nor composite number