Yes.
18 = 2 * 3 * 3
18 6*3 = 18 54/18 = 3
No, 18 is a multiple of 3. 3 is a factor of 18.
1, 2, 3, 6, 9, 18
There are an infinite number of numbers with 3 as a factor. Any number evenly divisible by 3 has 3 as a factor. That means 6, 9, 12, 15, 18, ..., all have 3 as a factor.
2 is a factor of 18 and is not a multiple of 3.
One way to check if 3 is a factor of a "larger number", add all of the individual numbers of the "larger number" together and see if 3 factors into it. For example: 6435. Add 6 + 4 + 3 + 5 = 18 3 is a factor of 18, so 3 is a factor of 6435.
Its factors are: 1 2 3 6 9 and 18
The highest common factor of 21 and 18 is 3
The prime factorization of 18 is 3 x 3 x 2.
Any multiple of 3 has 3 for a factor. So, 3, 6, 9, 12, 15, 18 and on to infinity.
No, 9 is not a prime number because it has factors other than 1 and itself. In this case, 9 is a factor of 18 because 9 multiplied by 2 equals 18. Prime numbers are numbers that have exactly two factors, 1 and the number itself, while factors are numbers that can be multiplied together to get the original number.