Lulu and Sophie from St. Nicolas C. of E. Junior School, Newbury have sent us a solution to the Multiples Grid problem. Thank you both! For the first large square, they say:
In this square:
Are you sure the blue could be multiples of 5? In this square:
In the next square:
Finally, in this last square:
Sophie and Lulu wrote:
Thank you for sending us your solution, girls. Well done!