We had our first solution to NRICH sent in from Bhutan. Sonam at the Yurung Central School sent in this:
William and Jake from Boulcott School in New Zealand sent in solutions saying it took about 30 minutes.
Lauren from Westridge Private School for Girls in Pasadena, California sent in this explanation:
How I solved this problem is that I first use all the clues. How I used them is I used it for a column and a row and since there is few more, I filled other ones. Then I solved it. How I solved is that I used multiplication to get the correct number that is in the box. Then I used the other numbers to check my work.
Thank you for these solutions, of course you are still able to explore further since there are a number of different arrangements that may pop up!