1 and 5 are the factors of 20 which are odd.
Factors of 20 are 1, 2, 4, 5, 10 and 20. And their sum is 1 + 2 + 4 + 5 + 10 + 20 = 32.
The greatest common factor (GCF) of 20, 30, and 50 is 10. To find the GCF, you need to determine the largest number that divides evenly into all three numbers. In this case, 10 is the largest number that is a factor of 20, 30, and 50. This can be calculated by finding the prime factors of each number and identifying the common factors among them.
3 pairs of factors. They are: 1 and 20 2 and 10 4 and 5 Pairs of factors are numbers that you multiply together to make that number, e.g. 4x5=20. Trust me I'm a teacher!
The question, as asked, is difficult to answer, The number of zeros in factorial 100 is not the same as the number of 0s at the end of factorial 100 since there will be some before the end.The answer to the second question is easy:The number of zeros is determined by the number of 10s in the factors.Since 2s are common, this, in turn, depends on the number of 5s.In 100!, there are 20 multiples of 5 each of which will contribute a 5 to the factors of 100!.In addition there are 4 multiples of 52 = 25 each of which will contribute another 5 to the factors of 100!All in all, therefore, there are 24 5s giving 24 0s at the end of 100!
20: 1,2,4,5,10,2050: 1,2,5,10,25,50Common Factors: 1,2,5,10
Because there are only six factors... 1,2,4,5,10 & 20
List all the factors of each number. Which factors are prime factors between 20 and 28.
1). List all of the factors of 16. 2). List all of the factors of 20. 3). List all of the factors of 28. 4). Make a short list, comprised of any numbers that are on all three lists. These are the common factors of 16, 20, and 28. 5). Find the greatest number on the short list. That's the greatest common factor of 16, 20, and 28. If it is not 4, then an error has crept into your work, and you are doomed to return to Step-1 and eternally repeat the process until you get 4 .
1,2, and 4
1, 2, 4, 5, 10, 20
All of the positive whole-number factors of 100 are . . . 1, 2, 4, 5, 10, 20, 25, 50, and 100 .
The common factors are: 1, 2, 5, 10.
The powers of 2 from 20 to 25.
There are many factors for the number 120: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120.
To find the common factors of 30 and 20, we first list the factors of each number. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors that are common to both numbers are 1, 2, 5, and 10.
1 and 20, 2 and 10, 4 and 5 are all of the pairs of factors of 20.