Elementary Problems: E2495,E2516-E2521

Autor: Klamkin, M. S., Shepp, L. A., Newman, Morris, Johnson, Charles, Ferrer, Alex G., Zave, Derek A., Montgomery, H. L., Huff, G. B., Cross, John A.
Zdroj: The American Mathematical Monthly, 1975 Feb 01. 82(2), 168-169.
Databáze: JSTOR Journals