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 Multiplication Table (Posted on 2006-07-07)
Imagine a multiplication table (like the one below, except it continues on forever):

```   1   2   3   4
+---+---+---+---+---
1| 1 | 2 | 3 | 4 |...
+---+---+---+---+---
2| 2 | 4 | 6 | 8 |...
+---+---+---+---+---
3| 3 | 6 | 9 | 12|...
+---+---+---+---+---
4| 4 | 8 | 12| 16|...
+---+---+---+---+---
|...|...|...|...|...
```

Find three of the same number in a straight line somewhere within the table. If this is not possible, show why not.

 No Solution Yet Submitted by tomarken Rating: 3.0000 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
 On the other hand | Comment 9 of 12 |

If the multiplication table goes forever in all directions, then you do get a straight line of 3 zeros. But if it only goes in the two directions shown, then it is impossible for the reasons stated already.

 Posted by Joe on 2006-07-08 10:55:24

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