1, 3, 7, 21.
1, 3, 7 and 21
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
They are: 3 and 7
21 has two prime factors.
21
21
1 ,3 ,7 ,21
1, 3, 7, 21.
1, 3, 7, 21.
-21
1, 3, 7, 21.
1, 3, 7 and 21
1, 3, 5, 7, 15, 21, 35, 105.
Nothing can go evenly into 21 or 17. They are both odd numbers and therefore cannot be evenly divided.
Oh, dude, 9 and 21 both go into numbers that are multiples of both 9 and 21. So, like, they can go into numbers like 63, 126, 189, and so on. It's just basic math, nothing too mind-blowing.
They are: 3 and 7