Is 505 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 505 is composite or not first we have to find its factors.
Contents
Factors of 505:
- If we have taken numbers from 1, 2, 3…for checking factors of 505, we found that 505 has factors 1, 5, 101 and 505. Hence, we must say that 505 is a composite number.
- Thus, 505 is the composite number.
- If we multiply 505 by 1, 2, 3 then we get the multiples of 505 which are 505, 1010 and so on.
505 is a Composite number or Prime number
About the number 505:
- 505 has more than two factors which are 1, 5, 101 and 505 and hence it is the composite number.
- 505 is the odd composite number and it is not the perfect square also.
- If we divide 505 by 1, 5, 101 and 505 then we get remainder as zero. Hence, 1, 5, 101 and 505 are the factors of 505.
Note:
- 505 is not the perfect square.
- Factors of 505: 1, 5, 101 and 505
- Prime factors of 505: 5, 101
Conclusion:
- 505 is the composite number which has factors 1, 5, 101 and 505.
- And hence, 505 is not the prime number.
Multiple Choice Questions:
1) 505 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 505 are
a) 1
b) 5, 101
c) 1 and 505
d) 1, 5, 101 and 505
Ans: b) 5, 101
3) 505 is the odd composite number because
a) It has factors 1, 5, 101 and 505
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c