Puzzle 18
Painter Pete, our local DIY expert, is renovating the local hospital.
He has to number each of the rooms in the hospital with plastic numbers.
However, he has run out of the number 9.
Unfortunately, he has no spare 6's available, which certainly would have been useful.
How many 9's must Pete buy in order to number all 1,000 rooms?
Puzzle 19
During the recent BrainBashers cipher convention, a Morse code contest took place.
The contest consisted of a Morse code transmission where the spaces between the letters and words were missing.
Can you decipher the sequence and find the well known proverb?
Luckily, BrainBashers has provided you with a list of the Morse code characters:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Puzzle 20
Start in the bottom left corner and move either up or right, one square at a time, using the numbers and the mathematical signs along the way. What is the largest total you can make?
| + | 2 | − | 4 | + | 2 |
| 2 | + | 2 | − | 2 | + |
| − | 1 | + | 3 | − | 3 |
| 2 | − | 3 | + | 1 | − |
| + | 1 | − | 3 | + | 2 |
| 3 | + | 3 | − | 2 | + |
Note: this puzzle is not interactive, and the numbers cannot be clicked.