The factors of 15 are:
1, 3, 5, 15
The factors of 305 are:
1, 5, 61, 305
The GCF is 5.
Short answer: 2 Explanation: Let's factor out the smallest number first. The factors of 12 are 1,2,3,4,6, and 12. Now we'll take the largest of those factors and see if its a factor of the other two. 12 isn't a factor of either, so we'll look at the next biggest and work our way down. 6 is a factor of 18 but not 44 so that's out. 4 isn't a factor of 18. 3 isn't a factor of 44. 2 is a factor of both 18 and 44, so that is our greatest common factor.
Answer: 416 = 2 x 2 x 2 x 236 = 2 x 2 x 3 x 3There are two 2's in each factorization, so the GCF is 2 x 2 = 4
The concept of common factors does not work with fractions because, once the domain is the rationals rather than integers, any rational can divide into any other rational. So any number can be a common factor and, therefore, there cannot be a greatest one. For example, consider 1000. 25/1000 = 0.025 1.50/1000 = 0.00150 75/1000 = 0.075 3.00/1000 = 0.00300 Thuse, 1000 can be considered a common factor. But by the same argument, so can 1,000,000; a billion, a googol.
To find the common factor when factorising, look for any common factors that can be divided evenly from all the terms in the expression. Divide each term by this common factor, and then factorise the resulting expression further if possible. This will help simplify the expression and make it easier to work with.
You check whether there is a common factor - in this case, common between 4 and 30. If you find one, you divide both numbers by this common factor.
You need at least two numbers to find a GCF.
is 8
1,3,7,9,21,63 1,2,3,4,8,9,18,24,36,72 The factors in common are 1,3,9 The largest (greatest) common factor is 9
the greatest common factor of 28 and another number is 7 the second number is between 60 and 70 what is it show your work
8 = 1 * 8 24 = 3 * 8 GCF is 8.
To work out the greatest common factor, you need two numbers. In this case there is only one number so there is no GCF.
List the factors. 1,7 1,2,4,5,10,20 The only, and therefore the greatest common factor is 1.
1, 2, 4, 81, 2, 5, 10The GCF is 2.
There's no work to show. 24 is a factor of 48, so it has to be the GCF.
6 and 12 will work.
The factors of 184 are: 1, 2, 4, 8, 23, 46, 92, 184 The factors of 207 are: 1, 3, 9, 23, 69, 207 The common factors are: 1, 23 The Greatest Common Factor: GCF = 23
Two or more numbers are needed to work out their GCF