Question
William wrote the number 1 to 72 on a piece of paper. They were arranged in 4 rows, Y, Z, A and B. The piece of paper was torn and only one part of it was left. Which row was the number 39 in?
4 m

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William wrote the number 1 to 72 on a piece of paper. They were arranged in 4 rows, Y, Z, A and B. The piece of paper was torn and only one part of it was left. Which row was the number 39 in?