There are 71 multiples altogether here. Some of them are 7, 14, 21.
Multiples of 28
Since all 3 are prime numbers LCM = 3 * 5 * 7 = 105 All multiples of 105 are multiples of 3, 5 and 7
There are several multiples of 100. The multiples of 1 are: 1, 2, 3, 4, 5, 6, 7, 8 ect. All you have to do is add 2 zeroes. The multiples of 100 are: 100, 200, 300, 400, 500, 600, 700, 800 ect.
42 is the LCM of 3, 6 and 7. All multiples of 42 are multiples of 3, 6 and 7
There are no multiples of 7 down there, nor are there any NON-multiples of 7 . The truth is that there are no numbers at all below.
Step-by-step explanation: The greatest number between 200 and 500 that is divisible by 7 is 497. So the multiples of 7 in this range are 203, 210, 217, 224, … 490, 497.
Since 14 is a multiple of 7, all of its multiples are common.
Multiples of 28
Since all 3 are prime numbers LCM = 3 * 5 * 7 = 105 All multiples of 105 are multiples of 3, 5 and 7
There are several multiples of 100. The multiples of 1 are: 1, 2, 3, 4, 5, 6, 7, 8 ect. All you have to do is add 2 zeroes. The multiples of 100 are: 100, 200, 300, 400, 500, 600, 700, 800 ect.
42 is the LCM of 3, 6 and 7. All multiples of 42 are multiples of 3, 6 and 7
There are no multiples of 7 down there, nor are there any NON-multiples of 7 . The truth is that there are no numbers at all below.
Oh, dude, multiples of 7 from 1 to 500? That's like asking me to count how many times I've eaten pizza in my life - too many to keep track of! But hey, I can tell you that the multiples of 7 in that range are 7, 14, 21, 28, and so on until you hit 497. So, like, there you go, math wizard!
Itself and all other multiples of 7
All multiples of 7, which is an infinite number.
70, 140, 210, 280, 350, 420, 490
First, we want to find the first multiple of 7 above 100. This is 105. 105/7=15. Next, we want to find the last multiple of 7 below 500. That would be 497/7=71. Now, we perform 71-15=56. Since our list was inclusive, meaning that we counted both 105 and 497, we add one to get 57 multiples of 7 between 100 and 500.