carved into the stone and some of the numbers were inside them and others outside.
Muko had a sudden brainwave. “Do you remember that class we had with Mr Yu?” he asked his friends. “He told us about various mathematical riddles and also about the Magic Square. Look! I think there's a Magic Square carved in the wall! It's got 6 rows and 6 columns with numbers in them.”
Gelio started giggling. He was teasing Paidia about her incantations. “You haven't managed to get a rabbit out of a hat,” he told her, laughing so hard he had tears in his eyes. “Maybe you can conjure up something for me to drink?”
However very quickly they were all focussing on Muko's discovery and congratulating him.
“It's tremendous,” Amartia said with unaccustomed enthusiasm. “It's a mathematical riddle but it's not a magic square. Look! The sum of the numbers in the first row doesn't equal the sum of those in the second or subsequent rows. Which makes it definitely not a magic square. In any case, some of the numbers are duplicated so it could only be a pseudo magic square.”
Muko got right up close and peered at the numbers. He