Here is an example of a 4 by 4 Latin square:

Can you see what is going on?

**In the grid below, N is a 6 digit number with a very special property:**

if you double the number and write it in the second row,

treble the number and write it in the third row,

and so on...

you end up with a Latin Square!

N: | ||||||
---|---|---|---|---|---|---|

2N: | ||||||

3N: | ||||||

4N: | ||||||

5N: | ||||||

6N: |

Work out the number in the pale blue cell first.

Then the numbers in the column marked "2nd", then "3rd" and so on...

1st | |||||

3rd | 4th | 5th | 2nd | ||

There is some more advice in the Getting Started section.