251 (son)
251 (ikki yuz ellik bir) – 250 va 252 orasidagi natural son.[1]
Matematikada
251 — tub son.
Fanda
Boshqa sohalarda
Manbalar
Adabiyotlar
- The Penguin Dictionary of Curious and Interesting Numbers (inglizcha) Walles, David: . London: Penguin Books, 1987.