Yeah cool but pretty easy I loves it tho

Not sure why the square numbers weren't written out (it made the group far too easy to spot being numbers, so much so I though it was a trap).
The tech group and high earning businesses overlap too much, making it hard to tell which should go into which.

Quite vague catergories

There were answers that could've been swapped between the 'tech companies' and 'high earning businesses' groups (unless that's a technical term with a very specific definition I don't know of), so the grid doesn't actually have only one valid solution.

high earning businesses is far too vague to be a category. Media is already the plural of medium - medias is just wrong. What Ant said about the numbers: if there are only four numbers, it's too easy

this quiz was a bit naff.