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  • 1(自然数之一)_百度百科
    1可以化成任何一个 分子 、 分母 相同(不为0)的 假分数。 1的 因数 只有它本身,是任何正整数的 因数。 任何整数都是1的 倍数。 1的 倒数 是1, 相反数 是-1。 1是 斐波那契数列 的第1,2项,是 斐波那契数列 中出现次数最多的数。 1的 绝对值 和n次 方根 还是1。
  • 1 - 维基百科,自由的百科全书
    1是计数或 测量 的单位,单数名词的限定词,以及中性代词。 历史上1的表示形式从 古苏美尔 和 巴比伦 符号演变为现代 阿拉伯数字。 在数学中,1为乘法单位元,即任何数字与1相乘皆等于其本身。 按照惯例,1不被视为素数。
  • 1 - Wikipedia
    1 (one, unit, unity) is a number, numeral, and glyph It is the first and smallest positive integer of the infinite sequence of natural numbers
  • 1 (number) - Simple English Wikipedia, the free encyclopedia
    One (1) is the first natural number, followed by two The Roman numeral for one is I In mathematics, the number one is the multiplicative identity [1] It is also the only number for which these special facts are true: Any number multiplied by one equals that number: For example, Any number divided by one equals that number: For example,
  • 1 和1 分别代表多少厘米 - 百度知道
    1英寸= 1"。 而1‘是一分,一般是指角度。
  • 1 - 维基词典,自由的多语言词典
    数字‘ 1 ’在七段数码管内的表示方法。 1 (前 0,后 2) (語音學,漢字文化圈,通常上標) 一聲,通常與 陰平 相關聯。 如果不區分陰陽,可以簡單地稱為 平聲 (四聲)。 挪威語 瑞典語的調素1有時用一個簡單的主音標記轉寫 ˈ。 十进制系统中等价: 基数中等价: (部分包含“1”的基数) 10, 11, 12, , 100, 101, 102, , 1000, , 10,000, 100,000, 1,000,000, (其他包含“1”的数字) -10, -1, -0 1, , 0 1, 0 01, 0 001, 1的其他 表徵: (網路用語, 駭客語, 諷刺) ! 的故意誤拼,模仿打感叹号太激动时没有按住 shift 键导致的情况。
  • 1 -- from Wolfram MathWorld
    The number one (1), also called "unity," is the first positive integer It is an odd number Although the number 1 used to be considered a prime number, it requires special treatment in so many definitions and applications involving primes greater than or equal to 2 that it is usually placed into a class of its own (Wells 1986, p 31)
  • 1 (number) - New World Encyclopedia
    1 (one) is a number, numeral, and the glyph that represents the number It represents a single entity and is commonly regarded as the fundamental unit of counting and measurement For example, a line segment of "unit length" is a line segment of length 1 In mathematics, the number 1 is the natural number [1] that follows 0 and precedes 2




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