Is 705 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 705 is composite or not first we have to find its factors.
Contents
Factors of 705:
- If we have taken numbers from 1, 2, 3…for checking factors of 705, we found that 705 has factors 1, 3, 5, 15, 47, 141, 235 and 705. Hence, we must say that 705 is a composite number.
- Thus, 705 is the composite number.
- If we multiply 705 by 1, 2, 3 then we get the multiples of 705 which are 705, 1410 and so on.
705 is a Composite number or Prime number
About the number 705:
- 705 has more than two factors which are 1, 3, 5, 15, 47, 141, 235 and 705 and hence it is the composite number.
- 705 is the odd composite number and it is not the perfect square also.
- If we divide 705 by 1, 3, 5, 15, 47, 141, 235 and 705 then we get remainder as zero. Hence, 1, 3, 5, 15, 47, 141, 235 and 705 are the factors of 705.
Note:
- 705 is not the perfect square.
- Factors of 705: 1, 3, 5, 15, 47, 141, 235 and 705
- Prime factors of 705: 3, 5, 47
Conclusion:
- 705 is the composite number which has factors 1, 3, 5, 15, 47, 141, 235 and 705.
- And hence, 705 is not the prime number.
Multiple Choice Questions:
1) 705 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 705 are
a) 1
b) 3, 5, 47
c) 1, 15, 141, 235 and 705
d) 1, 3, 5, 15, 47, 141, 235 and 705
Ans: b) 3, 5, 47
3) 705 is the odd composite number because
a) It has factors 1, 3, 5, 15, 47, 141, 235 and 705
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c