 |
| 1. |
pretorik |
- |
161 |
| 2. |
markr |
- |
116 |
| 3. |
Gordon Weir |
- |
104 |
| 4. |
mbloomfi |
- |
97 |
| 5. |
Dennis Nazarov |
- |
96 |
| 6. |
zzz123 |
- |
72 |
| 7. |
Srikanta |
- |
56 |
| 8. |
lidSpelunker |
- |
53 |
| 9. |
SAMIH FAHMY |
- |
48 |
| 10. |
jkr |
- |
44 |
|
 |
 |
 |
| 1. |
denisR, mishik |
- |
236 |
| 2. |
alan, De_Bill |
- |
231 |
| 3. |
dddfff |
- |
228 |
| 4. |
kavfy |
- |
221 |
| 5. |
idler_ |
- |
106 |
| 6. |
akajobe |
- |
94 |
| 7. |
tolstyi |
- |
56 |
| 8. |
STARuK |
- |
42 |
| 9. |
vale |
- |
31 |
| 10. |
xandr |
- |
11 |
|
|
|
|
|
|
| The set of numbers 1,3,8,120 has a remarkable property: the product of
any two numbers is a perfect square minus one. Find a fifth number
that could be added to the set preserving its property. |
 |
|
|
Please do not post comments containing clues, hints, or anything that might be considered as a hint to others. All such comments will be deleted. If you have a question, you can contact a moderator by clicking the button "Submit your solution".
|
| idler_ |
| |
Rating: 106
Group: Moderators
|
|
|
|
| dddfff |
| |
Rating: 228
Group: Moderators
|
|
|
|
| alan |
| |
Rating: 231
Group: Moderators
|
|
|
|
| zzz123 |
| |
Rating: 72
Group: Members
|
|
|
|
 |
|
|
- administrator
- moderator
- VIP user
- user
