These numbers are divided by 5 without remainder, so their common factor must be divided by 5 without remainder aswell. Let's start from 45 stepping over 5 and skipping any unmatching result: not 45, not 40, not 35, not 20 (since none of 45 and 70 divide these without reminder), but it's 15 (which gives us 45/15 = 3 and 70/15 = 5, here both results are round numbers, which gives us 15 as the answer).
35 is not the LCM of 3 and 5, 15 is. LCM means Lowest Common Factor. To find the LCM of 3 and 15 you have to list the multiples: 3, 6, 9, 12, 15, 18, 21 etc. 5, 10, 15, 20, 25, etc. The LCM is the least common number in both the lists, which is 15.
35/1000 - divide both top and bottom by 5 and you get 7/200, which is in its simplest form
15 and 21 21 and 35
3 and 5 both go into multiples of 15, as both numbers are factors of 15. In mathematical terms, 15 is a multiple of both 3 and 5 because it can be evenly divided by both numbers without leaving a remainder.
5
3 with a remainder of 15 or 3.4286
If there is a remainder of 8 when they divide into 113, then they must be factors of 113 - 8 = 105, but not factors of 113, and greater than 8: The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The factors of 113 are: 1, 113 Thus the 3 numbers which divide 113 with a remainder of 8 are 15, 21, 35, 105 (oops, there are 4 numbers which satisfy the criteria - I never could count...)
All numbers of that kind: 5, 15, 25, 35, 45, 55, 65... 105, 115... and so on
The factors of 105 are 1, 3, 5, 7, 15, 21, 35, 105. They are the only numbers that will divide evenly with no remainder into 105.
7 is not the greatest common factor (GCF) of 15, 30, and 35 because 7 does not evenly divide into all three numbers. The GCF is the largest number that can divide all three numbers without leaving a remainder, and in this case, the GCF is actually 5 since 5 divides evenly into all three numbers.
All numbers that leave a remainder when divided by 35.
Simply enough, divide. Example 1: What is 105/7? Well, since 7 goes into 10 once, remainder 3, and into 35 five times, the answer is 15. Example 2: What is 150/13? We divide 15/13 and get 1, remainder 2. "Bring down" the 2, and we divide 20/13 and get 1, remainder 7. So the answer is 11 7/13.
A factor of a number is any number which the original number can divide into evenly. That is to say, can divide into without leaving a remainder, decimal or fraction. The factors of 15 are: 1, 3, 5 and 15 The factors of 20 are: 1, 2, 4, 5, 10 and 20. The factors of 35 are: 1, 5, 7 and 35.
35.7143
Divide both numbers by 5 changes the ratio to: 7 and 3
Because 7 and 5 divide into 35 evenly with no remainder.