Is 2920 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 2920 is composite or not first we have to find its factors.
Contents
Factors of 2920:
- If we have taken numbers from 1, 2, 3…for checking factors of 2920, we found that 2920 has factors 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920. Hence, we must say that 2920 is a composite number.
- Thus, 2920 is the composite number.
- If we multiply 2920 by 1, 2, 3 then we get the multiples of 2920 which are 2920, 5840 and so on.
About the number 2920:
- 2920 has more than two factors which are 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920 and hence it is the composite number.
- 2920 is the even composite number and it is not the perfect square also.
- If we divide 2920 by, 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920 then we get remainder as zero. Hence, 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920 are the factors of 2920.
Note:
- 2920 is not the perfect square.
- Factors of 2920: 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920
- Prime factors of 2920: 2, 5, 73
Conclusion:
- 2920 is the composite number which has factors, 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920
- And hence, 2920 is not the prime number.
Multiple Choice Questions:
1) 2920 is a
a) Prime number
b) Odd number
c) Composite number
d) Both a and c
Ans: c) composite number
2) The composite factors of a composite number 2920 are
a) 2920
b) 2, 5, 73
c) 4, 8, 10, 20, 40, 146, 292, 365, 584, 730, 1460 and 2920
d) 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920
Ans: c) 4, 8, 10, 20, 40, 146, 292, 365, 584, 730, 1460 and 2920
3) 2920 is even composite number because
a) It has factors 1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460 and 2920
b) It has only two factors
c) Divisible by 2
d) Both a and c
Ans: d) both a and c