| 6 | 9 | 13 | 7 |
| 12 | ? | 10 | 5 |
| 3 | 1 | 4 | 14 |
| 15 | 8 | 11 | 2 |
The answer is (select the text below to reveal the answer )
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The answer is 16 ... The cube is filled with numbers from 1 to 16 in no particular order ... The diagonal highlight is nothing more than a distraction ...
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