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Which shows all the factors of 72?
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
What is the sum of all the common factors of 9 and 18?
To find the common factors of 9 and 18, we first need to list the factors of each number. The factors of 9 are 1, 3, and 9, while the factors of 18 are 1, 2, 3, 6, 9, and 18. The common factors of 9 and 18 are 1, 3, and 9. Adding these common factors together gives us a sum of 13.
How can you prove the gcd if 18 and 45?
List the factors. The factors of 18 are: 1, 2, 3, 6, 9, 18 The factors of 45 are: 1, 3, 5, 9, 15, 45 The common factors are: 1, 3, 9 The Greatest Common Factor: GCF = 9
What are the common factors for 16 and 18?
Since 6 is a factor of 18, all of its factors are common.
How can a factor tree help find composite factors of 36?
A factor tree shows you the prime factors and can help you find all the factors. The composite factors of 36 will be the ones that aren't prime or 1. 36 18,2 9,2,2 3,3,2,2 2 and 3 are prime factors of 36. Looking at the tree, we see that 9, 18 and 36 are also factors. Dividing 3 into 36 gives you 12. Dividing 9 into 36 gives you 4. Any number that is divisible by 2 and 3 is also divisible by 6. That's all of them. 4, 6, 9, 12, 18, 36
