First of all you could start with by looking for the singular codes. Then you could find which ones fit together. By this time you would of completed 1,2,3,4,5,6,7,8,9and 10. The first numbers will stand out and will look like a singular figure. The last numbers might have the second to last figure in the tens column and then in the ones or units column the first nine figures. In the very last column, the figure might have in the hundreds column the first figure.
I know that the multiples of eleven - up to 99 - is always the same number e.g. 88, 44, 11, 66. In each column, the position of the ones are the sane e.g. 12,22,32,42 however the only thing that is different is they always have a different ten like 40 and 20 and the last number is different. The thing that will be the same in each nine numbers in each row is the ones are the same.
Solution
156401
Problem
First name
Isabella Cuni
School
Wentworth Primary
Country
Age
10