Is 4780 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 4780 is composite or not first we have to find its factors.
Contents
Factors of 4780:
- If we have taken numbers from 1, 2, 3…for checking factors of 4780 we found that 4780 has factors 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780. Hence, we must say that 4780 is a composite number.
- Thus, 4780 is the composite number.
- If we multiply 4780 by 1, 2, 3 then we get the multiples of 4780 which are 4780, 9560 and so on.
About the number 4780:
- 4780 has more than two factors which are 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780 and hence it is the composite number.
- 4780 is the even composite number and it is not the perfect square also.
- If we divide 4780 by, 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780 then we get remainder as zero. Hence, 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780 are the factors of 4780.
Note:
- 4780 is not the perfect square.
- Factors of 4780: 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780
- Prime factors of 4780: 2, 5, 239
Conclusion:
- 4780 is the composite number which has factors, 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780
- And hence, 4780 is not the prime number.
Multiple Choice Questions:
1) 4780 is a
a) Prime number
b) even number
c) even Composite number
d) Both a and c
Ans: c) even composite number
2) The prime factors of a composite number 4780 are
a) 4780
b) 2, 5, 239
c) 4, 10, 20, 478, 956, 1195, 2390 and 4780
d) 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780
Ans: b) 2, 5, 239
3) 4780 is even composite number because
a) It has factors 1, 2, 4, 5, 10, 20, 239, 478, 956, 1195, 2390 and 4780
b) It has more than two factors
c) Divisible by 2
d) all
Ans: d) all