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The formal answer is that 18 goes into the number without remainder.
A simple test for divisibility by 18 is as follows:
(a) the number must be even.
(b) the sum of all the digits of the number must be divisible by 9.
(a) ensures the number is divisible by 2 and (b) that it is divisible by 9. So, together they ensure divisibility by 2*9 = 18.
Note that (b) only works with 3 and 9.
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Find the smallest number that is divisible by 18 and 48?
The smallest number that is divisible by 18 and 48 is 144.
What are the divisibility rules of 18?
If the number is even and the sum of its digits is divisible by nine then the number is divisible by 18.
What is the divisibility rule for 18?
Any even number divisible by 9, if the sum of the digits is divisible by 9. If it's an even number divisible by 9, it's divisible by 18.
What number is divisible by 3 and 6 but is not divisible by 4?
18
Is 52 divisible bye 18?
Fifty-two is divisible by 18, but it does not end up a who,e number.
What is a counter example for the conjecture Any number that is divisible by 2 is also divisible by 4 options 32 12 40 or 18?
What we want to find is the number in that list that is not divisible by 4. This number would be 18, your answer.
What makes a number divisible by 9?
A number is divisible by 9 if a whole number of 9s can go into it and leave no remainder.
What number is divisible by 2 and 9?
18
If a number is divisible by six and two then is it divisible by twelve?
No; for example, 6 is not divisible by 12, nor is 18.
How do you find the prime factorization of 18?
First we have to find a prime number by which 18 is divisible. 18 is divisible by both 2 and 3. However, we can start with any number. 18/3 = 6, now we have to look for a prime number by which 6 is divisible. 6/3 = 2, 2 is divisible by itself. So, prime factorization of 18 = 2x3x3.
What number is divisible by 18 and 9?
The LCM of both numbers is 18
What is the smallest number divisible by 3 6 and 9?
The smallest number divisible by 3 6 and 9 is 18.
