ưu binh

Một học sinh viết số ưu binh lên bảng đen.

Definition

1. Noun (Mathematics):
   • Odd number: A whole number that is not divisible by two; a number that leaves a remainder of one when divided by two. This is the primary mathematical meaning of "ưu binh" in historical or specialized contexts.

Usage Examples

• Noun:
  • Trong dãy số từ 1 đến 10, các số ưu binh là 1, 3, 5, 7, và 9. (In the sequence from 1 to 10, the odd numbers are 1, 3, 5, 7, and 9.)
  • Thuộc tính của số ưu binh là không chia hết cho 2. (The property of an odd number is that it is not divisible by 2.)

Advanced Usage

• This term is considered archaic or highly specialized in modern Vietnamese mathematics, where "số lẻ" is the common term for "odd number." "Ưu binh" may be encountered in historical texts or specific technical contexts.

Variants and Related Words

• Số lẻ (n): The modern and standard term for "odd number."

  • Số 15 là một số lẻ. (The number 15 is an odd number.)

• Số chẵn (n): Even number (the direct antonym).

  • Số ưu binh và số chẵn là hai khái niệm đối lập. (Odd numbers and even numbers are two opposite concepts.)

Synonyms

• Odd number: An integer not exactly divisible by two.

Notes on Usage

• The provided reference definition "éparite; singulaire" appears to be a transcription error or a highly obscure term. The correct French mathematical term for "odd number" is . "Ưu binh" is not a term used in contemporary standard Vietnamese. Learners should use "số lẻ" instead.