As a product of its prime factors: 2*3*3 = 18
The three numbers that multiply together to equal 18 are 1, 2, and 9. This is because 1 x 2 x 9 = 18. These numbers are the factors of 18, which are integers that can be multiplied together to give the original number.
Use the definition of "average". Add the numbers together, then divide the result by 3 (since there are 3 numbers).
3 times 3 times 2 equals 18
-3 and 6
2, 3 and 13
The prime factors of 18 are 2, 3, and 3. When multiplied together, 2 x 3 x 3 equals 18. These are the three prime numbers that multiply to give 18.
Add the numbers together, and then - since there are three numbers - divide the result by 3.
1 and 18 2 and 9 3 and 6
10, just add them all together and divide by how many numbers there are. sometimes you will need a calculator but this time is a definite no
20
the answer is 18
1 x 18 2 x 9 3 x 6