Exam questions
| 1. | Find the required answer Difficulty: medium | 
                                    
                                    1
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| 2. | Find the largest number Difficulty: medium | 
                                    
                                    1
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| 3. | Find the least number of boxes Difficulty: medium | 
                                    
                                    2
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| 4. | Find the answer for the following Difficulty: medium | 
                                    
                                    2
                                 |