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What are all the odd factors of 20?
1 and 5 are the factors of 20 which are odd.
What is the sum of all factors of 20?
Factors of 20 are 1, 2, 4, 5, 10 and 20. And their sum is 1 + 2 + 4 + 5 + 10 + 20 = 32.
What is the greatest common factor of 20 30 and 50?
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.
How many factor pairs do 20 have and what are they?
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!
How do you find number of zeros in factorial 100?
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!
