![Problem Department]()
Problem DepartmentJohannes Mahrenholz, R. Goormaghtigh, W. L. Roberts, D. L. MacKay, J. Rosenbaum, C. W. Trigg, H. L. Smith, Daniel Arany, Virgil S. Mallory, E. P. Starke, W. T. Short, Robert C. Yates, E. C. Kennedy, Cyril A. Nelson, A Wag, N. A. Court, Howard D. Grossman and W. E. Byrne · National Mathematics Magazine · 1940