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Stereograms (page 3)3d images. These are the tasks listed 21 to 30. |
Climbing
Q: Why did the blond climb the glass wall?
A: To see what was on the other side.
A: To see what was on the other side.
The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
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Top 10 Users (1174)
| 1. |  |
H Tav | 5861 |
| 2. |  |
c. raj. | 5777 |
| 3. |  |
Nasrin 24 T | 5731 |
| 4. |  |
Fazil Hashim | 5718 |
| 5. |  |
Thinh Ddh | 5557 |
| 6. |  |
Alfa Omega | 4681 |
| 7. |  |
Djordje Timotijevic | 4549 |
| 8. |  |
Mita Kojd | 4525 |
| 9. | Jakubovski Vladimir | 4443 |
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| 10. | Chandu Rajyaguru | 4419 |
See full ranking list
BoronIn 1808, Humphry Davy announced in a paper read to the Royal Scociety that he had separated the element boron. Davy had taken boric acid with potassium in a copper tube and heated it to dull redness for fifteen minutes. The resulting olive-gray powder did not effervesce with water or acids, indicating that the potassium had disappeared. However, working independently, French chemist, Joseph Louis Gay-Lussac had announced the same accomplishment nine days earlier, on 21 Jun 1808.«* |
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