Four men already having denari found a purse of denari; the first man said that if he would have the denari from the purse, then he would have twice as many as the second. The second, if he would have the purse, then would have three times as many as the third, and the third, if he would have it, then he would have four times as many as the fourth. The fourth, five times as many as the first. How much denari does each man have?
Liber Abaci, Leonardo of Pisa,1202
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The answer is: first has 33 denari, second has 76 denari, third has 65 denari, fourth has 46 denari, and the purse has 119 denari in it (any multiple of all the above values is also correct)
"Purse of Denari," Convergence (December 2004)