Math Puzzles
Additional Solutions
Each math puzzle featured in The Amazing Puzzle Book from SEED has been published with a corresponding solution. There are times when sharp-eyed readers find further solutions—ones we had not thought of. If you find another solution, send it to us. We will review it and publish it here.
Each additional solution includes a link to the puzzle and the solution, as well as the page number where you can find the puzzle and solution in The Amazing Puzzle Book from SEED.
Build a Cube Puzzle (Solution)
pp. 66 and 152 in book
We say that there are seven ways to build a cube, but Peter Brookes found four more:
 |
 |
 |
 |
| Cube 8 | Cube 9 | Cube 10 | Cube 11 |
Measure Exactly 8 Liters of Water Puzzle (Solution)
pp. 48 and 141 in book
Reviewer Roman Korkin pointed out that while our solution takes 18 steps, he can measure 8 L in 13 steps:
|
Step # |
6 Liters |
11 Liters |
|
0 |
6 |
0 |
|
1 |
0 |
6 |
|
2 |
6 |
6 |
|
3 |
1 |
11 |
|
4 |
1 |
0 |
|
5 |
0 |
1 |
|
6 |
6 |
1 |
|
7 |
0 |
7 |
|
8 |
6 |
7 |
|
9 |
2 |
11 |
|
10 |
2 |
0 |
|
11 |
0 |
2 |
|
12 |
6 |
2 |
|
13 |
0 |
8 |
Find the Heavy Ball (Solution)
p. 44 in book
Roman Korkin suggests one more task for this puzzle. You have 12 balls that look the same, but there is one defective ball. You do not know whether it is lighter or heavier, only that it is defective. How can you identify the defective ball.
Roman says he can do it in three weighings—can you?
