The students numbered 1 to 8 should sit on the chairs so that no two consecutively numbered students sit next to each other either vertically, horizontally or diagonally.
Is it possible? If so, how many different solutions can you find?
1
2
3
4
5
6
7
8
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Topics: Starter  Logic  Problem Solving  Puzzles
When this activity has been completed use the created arrangement of numbers to ask the following revision questions:
Now ask the students to memorise the numbers in the diagram. After a minute turn off the projector and ask questions similar to the following:
Here is a printable version: Not Too Close Questions.
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This is one possible solution:
Teacher, do your students have
access to computers? 

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