Practice Questions
| 1. | Find the maximum length of the square tile Difficulty: hard | 
                                    
                                    5
                                 | 
Exam questions
| 1. | Calculate the time Difficulty: medium | 
                                    
                                    4
                                 | 
| 2. | Determine the longest rod Difficulty: medium | 
                                    
                                    1
                                 |