Is 1205 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 1205 is composite or not first we have to find its factors.
Contents
Factors of 1205:
- If we have taken numbers from 1, 2, 3…for checking factors of 1205, we found that 1205 has factors 1, 5, 241 and 1205. Hence, we must say that 1205 is a composite number.
- Thus, 1205 is the composite number.
- If we multiply 1205 by 1, 2, 3 then we get the multiples of 1205 which are 1205, 2410 and so on.
1205 is a Composite number or Prime number
About the number 1205:
- 1205 has more than two factors which are 1, 5, 241 and 1205 and hence it is the composite number.
- 1205 is the odd composite number and it is not the perfect square also.
- If we divide 1205 by 1, 5, 241 and 1205 then we get remainder as zero. Hence, 1, 5, 241 and 1205 are the factors of 1205
Note:
- 1205 is not the perfect square.
- Factors of 1205: 1, 5, 241 and 1205
- Prime factors of 1205: 5, 241
Conclusion:
- 1205 is the composite number which has factors 1, 5, 241 and 1205.
- And hence, 1205 is not the prime number.
Multiple Choice Questions:
1) 1205 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 1205 are
a) 1
b) 5, 241
c) 1 and 1205
d) 1, 5, 241 and 1205
Ans: b) 5, 241
3) 1205 is the odd composite number because
a) It has factors 1, 5, 241 and 1205
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c