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My eldest - 12 had homework on sequences. Most were straightforward, however, this one had me baffled 7, 5, 2, 1.
Anyone help?
Anyone help?
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It's a mis-print
should read 7,6,5,4,3,2,1 Next number is 0  seriously, it's not a sequence as differences between numbers show the pattern. |
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If you use magic triangles to reduce you get
7 5 2 1 2 3 1 1 2 1 which does not seem to work. Are you sure that the question has not been cattled? 7 5 3 1 2 2 2 0 0 for example works. Not that you would need to use anything other than observation to solve it. |
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7 5 2 1 5 (or -3?)
2 3 1 4 1 2 3 |
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-3
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Very well done Laroche.
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