1 علاقة: 31 (عدد).
31 (عدد)
31 (واحد وثلاثون) هو عدد صحيح include zero in the natural numbers: "Intuitively, the set of all "natural numbers" may be described as follows: contains an "initial" number 0;...". They follow that with their version of the Peano Postulates.
الجديد!!: ٣١ (عدد) و31 (عدد) · شاهد المزيد »