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smurf | 13:53 Thu 03rd Feb 2011 | Quizzes & Puzzles
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what does x equal
3, 1, 2, 0, 1, -1 x x =?
thanks for any help
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0, -2
Add 1 then subtract 2
0 ?

using alternate numbers you have two decreasing series: 3 2 1 x and 1 0 -1, but that is only one possibility

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