The Problem Solving question asked to fill in the magic Square. First row across 9,5,4 Second row across 1,6,11.
Theird row across 8,7,3. First row down 9,1,8 Second row down 5,6,7 and Theird row down 4,11,3 .
They had to equal the same number and they did the number was 18 and thats how I Problem solved the question.