Is 275 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 275 is composite or not first we have to find its factors.
Contents
Factors of 275:
- If we have taken numbers from 1, 2, 3…for checking factors of 275, we found that 275 has factors 1, 5, 11, 25, 55 and 275. Hence, we must say that 275 is a composite number.
- Thus, 275 is the composite number.
- If we multiply 275 by 1, 2, 3 then we get the multiples of 275 which are 275, 550, and so on.
275 is a Composite number or Prime number
About the number 275:
- 275 has more than two factors which are 1, 5, 11, 25, 55 and 275 and hence it is the composite number.
- 275 is the odd composite number and it is not the perfect square also.
- If we divide 275 by 1, 5, 11, 25, 55 and 275 then we get remainder as zero. Hence, 1, 5, 11, 25, 55 and 275 are the factors of 275.
Note:
- 275 is not the perfect square.
- Factors of 275: 1, 5, 11, 25, 55 and 275
- Prime factors of 275: 5, 11
Conclusion:
- 275 is the composite number which has factors 1, 5, 11, 25, 55 and 275.
- And hence, 275 is not the prime number.
Multiple Choice Questions:
1) 275 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 275 are
a) 1
b) 5, 11
c) 1, 25, 55 and 275
d) 1, 5, 11, 25, 55 and 275
Ans: b) 5, 11
3) 275 is the odd composite number because
a) It has factors 1, 5, 11, 25, 55 and 275
b) It is divisible by 2
c) It is not divisible by 2
d) Both a and c
Ans: d) both a and c