Here is an interesting cross number puzzle. Place the nine digits 1 through 9 in the grid below,
one digit per box, so that the three-digit numbers formed fit the clues.
|
1
|
2
|
3
|
|
4
|
||
|
5
|
ACROSS
1. A number with decreasing digits
4. A prime number
5. A prime number
DOWN
1. A prime number
2. A prime number
3. A prime number
DIAGONAL
1. A prime number
3. A prime number
Solution to the Problem:
|
8 |
6 |
4 |
|
2 |
5 |
1 |
|
7 |
3 |
9 |
Correctly solved by:
| 1. James Alarie | Flint, Michigan |
| 2. Chad Fore | Gate City, Virginia |
| 3. Marley Newton |
Mountain View High School, Mountain View, Wyoming |