x = x/4 + 18
4x = x + 72
3x = 72
x = 24
No, 18 is not prime. A prime number can only be divided by 1 and itself.
17 is a prime number, meaning the only number that factors into it is 1 and itself. so 1 is the answer 1. 17 is a prime number, or only divisible by itself. so the only numbers that 17 and 18 have in common is 1.
They are all factors of 18, but they are not all the factors of 18. Don't forget the number itself.
No. Because it has more than 2 factors 1,2,3,18.
That number
2 x 9 = 18, so 18 has more factors than 1 and itself. It cannot be prime because a prime number has two factors: 1 and itself.
No, 18 is not prime. A prime number can only be divided by 1 and itself.
17 is a prime number, meaning the only number that factors into it is 1 and itself. so 1 is the answer 1. 17 is a prime number, or only divisible by itself. so the only numbers that 17 and 18 have in common is 1.
18 is a composite number because a prime number can only be multiplied by 1 and itself. 18 can be multiplied by 9 and 2 also.
18
A deficient number is a number for which the sum of its positive integer factors (other than itself) is less than itself. The sum of the factors of 18 is 1 + 2 + 3 + 6 + 9 = 21. Since 21 is greater than 18, 18 is an abundant number.
An Abundant Number is one that the factors (other than itself) add up to more than the number. 18 factors into [2 3 3] so the factor list is {1 2 3 6 9 18} and the sum of the rest is 21. Since 21 is greater than 18, it is an abundant number.Yes 18 is an abundant number because if you add all of it's factors (1,2,3,6,9,) together the sum is 21.Definition of Abundant- a number that is less the sum of it's factors or integers
Add the digits of the number. If the sum is 9 or divisible by 9, the number itself is divisible by 9. Ex: 675 6 + 7+ 5 = 18 1 + 8 = 9 675 is divisible by 9.
18 is a composite number because it is even so definitely it has other factors aside from 1 and itself which is 2.
The factors of 18 are: 1, 2, 3, 6, 9, and 18.Since there are other factors in addition to '1' and the number itself,the number is composite.18 is a composite number because it has more than 2 factors18 is a composite number. A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite.18 is not prime; it is composite. 18 = 2 * 3 * 3
A prime number has only 2 factors which are 1 and itself. Composite numbers are everything else except 1 and 0. 1 and 0 are neither prime, nor composite. 18 is composite.
The number 18 can be evenly divided by the numbers 1, 2, 3, 6, 9, and 18 itself.