1. Using divisibility tests, determine which of the following numbers are divisible by 2; by 3; by 4; by 5; by 6; by 8; by 9; by 10 ; by 11 (say, yes or no):

| Number | Divisible by | ||||||||
| 2 | 3 | 4 | 5 | 6 | 8 | 9 | 10 | 11 | |
| 128 |
Yes |
No | Yes | No | No | Yes | No | No |
No |
| 990 |
Yes |
Yes | No | Yes | Yes | No | Yes | Yes |
Yes |
| 1586 |
Yes |
No | No | No | No | No | No | No |
No |
| 275 | No | No | No | Yes | No | No | No | No |
Yes |
| 6686 |
Yes |
No |
No |
No | No | No | No | No |
No |
| 639210 |
Yes |
Yes | No | Yes | Yes | No | No | Yes |
Yes |
| 429714 | Yes | Yes | No | No | Yes | No | Yes | No |
No |
| 2856 | Yes | Yes | Yes | No | Yes | Yes | No | No |
No |
| 3060 | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes |
No |
| 406839 | No | Yes | No | No | No | No | No | No |
No |