I have some strange dice: the faces show the numbers 1 to 6 as usual, except that the odd numbers are negative (i.e. -1, -3, -5 in place of 1, 3, 5). If I throw two such dice, which total cannot be achieved?
Select one option, then click Submit.
3
4
5
7
8
Select an option, then submit.
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Junior Mathematical Challenge 1999 (1999)
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