Smislih ovaj problem:
Neka je p prost broj. Dokazati da se duljina perioda broja 1/p ne mijenja ako se taj broj pomnoži bilo kojim prirodnim brojem manjim od p.
Vrijedi li tvrdnja i u slučaju da p nije prost?
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Look at every path closely and deliberately. Try it as many times as you think necessary. Then ask yourself,
and yourself alone, one question . . . Does this path have a heart? If it does, the path is good; if it doesn’t it is of no use.
Carlos Castaneda, The Teachings of Don juan
