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 Grid Look (Posted on 2013-07-29)
Four grids are given below. Determine the logic used in arriving at each successive grid. What would the next grid look like?
```+---+---+---+   +---+---+---+    +---+---+---+   +---+---+---+
| x | o |   |   | o | x | o |    | x | o | x |   | o | x |   |
+---+---+---+   +---+---+---+    +---+---+---+   +---+---+---+
| o |   | o |   | x |   |   |    | o |   |   |   |   |   | x |
+---+---+---+   +---+---+---+    +---+---+---+   +---+---+---+
| x |   |   |   | o |   |   |    |   | o |   |   | o |   | o |
+---+---+---+   +---+---+---+    +---+---+---+   +---+---+---+
```

 No Solution Yet Submitted by K Sengupta No Rating

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 solution Comment 1 of 1

The x's go clockwise one position.
The o's go counterclockwise one position.

Thus after four moves, they're opposite where they started.

`  +---+---+---+  |   |   | x |  +---+---+---+  | o |   | o |  +---+---+---+  |   | o | x |  +---+---+---+ `

 Posted by Charlie on 2013-07-29 17:16:12

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