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.
multiples of 63
They are: 3 and 7