1 and 3 are the only positive whole numbers that can do all of that.
1, 3, 7 and 21. Four numbers.
1, 3, 7, 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
1 ,3 ,7 ,21
1, 3, 7, 21.
The numbers that go into 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84
1, 3, 7, 21.
21
multiples of 63
1 and 3.
The numbers that go into 21 evenly are 1, 3, 7, 21.
1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
No, the only one that does is three. (1, 3, 7, 21)
The prime numbers from 1 to 21 are 2, 3, 5, 7, 11, 13, 17, and 19.