Is 525 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 525 is composite or not first we have to find its factors.
Contents
Factors of 525:
- If we have taken numbers from 1, 2, 3…for checking factors of 525, we found that 525 has factors 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525. Hence, we must say that 525 is a composite number.
- Thus, 525 is the composite number.
- If we multiply 525 by 1, 2, 3 then we get the multiples of 525 which are 525, 1050 and so on.
525 is a Composite number or Prime number
About the number 525:
- 525 has more than two factors which are 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525 and hence it is the composite number.
- 525 is the odd composite number and it is not the perfect square also.
- If we divide 525 by 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525 then we get remainder as zero. Hence, 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525 are the factors of 525.
Note:
- 525 is not the perfect square.
- Factors of 525: 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525
- Prime factors of 525: 3, 5, 7
Conclusion:
- 525 is the composite number which has factors 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525.
- And hence, 525 is not the prime number.
Multiple Choice Questions:
1) 525 is a
a) odd 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 525 are
a) 1
b) 3, 5, 7
c) 1, 15, 21, 25, 35, 75, 105, 175 and 525
d) 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525
Ans: b) 3, 5, 7
3) 525 is the odd composite number because
a) It has factors 1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175 and 525
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c