None of those numbers are composite because:
in math there are composite and prime numbers.
prime numbers can't be factored (have two numbers that multiply to get that number).
prime numbers can only be "made" by multiplying themselves by 1.
exp. only 1 x 11 gives you 11.
composite numbers have factors other than themselves and 1.
exp. you can get 24 by multiplying 12 x2, 8x3, 4x6, 24x1.
3, 5, 7, and 11 are prime numbers.
15 is a composite number - it can be divided by 3 and 5. 11, 13, 17 and 19 are all prime numbers, not composite.
Yes. A composite number is a number that is not prime. In the case of 225, it can be broken down to 5 * 5 * 3 * 3, and is thus composite.
Yes. 55 is a composite number and it is divisible by 1, 5, 11, 55
15 is a composite number - it is the product of 3 and 5. (3*5=15)
It is 11*13 = 143
5445 is composite.Any number that ends in 5 is divisible by 5, so it must be composite (unless, of course, it is the number 5).5445 factorises to 3 x 3 x 5 x 11 x 11.
The composite number 330 has those prime factors.
15 is a composite number - it can be divided by 3 and 5. 11, 13, 17 and 19 are all prime numbers, not composite.
1980
The smallest number that is both odd and composite is 9, which is divisible by 3. The odd numbers are 1, 3, 5, 7, 9, 11, ..., and 1, 3, 5, and 7 are all prime. It is 9 that is the smallest odd composite number.
Yes. A composite number is a number that is not prime. In the case of 225, it can be broken down to 5 * 5 * 3 * 3, and is thus composite.
1155 is a composite number because it ends with 5. All numbers that end with 5 except 5 itself are composite numbers because they are divisible by 5, which means there are at least three factors, 1, 5, and the number itself.
Yes. 55 is a composite number and it is divisible by 1, 5, 11, 55
compositeSixty-five is a composite number because it is divisible by five. If a number can be divide by another one, then that number is composite. Numbers like 3, 5, 7, and 11 are all prime numbers because they cannot be divided by any other number.65 is composite, as is any number of 2 or more digits ending in 5.
15 is a composite number - it is the product of 3 and 5. (3*5=15)
composite because 3 and 5 will go into it
It is 11*13 = 143