วันอังคารที่ 17 กรกฎาคม พ.ศ. 2555

จำนวนนับในคณิตศาสตร์

จำนวนนับ

เราเรียก 1 , 2 , 3 ... ว่าจำนวนนับ
จำนวนนับ a หารจำนวน b ลงตัว เมื่อมีจำนวนนับ c ซึ่งทำให้ b = ab

เช่น

2 หาร 16 ลงตัวเพราะ 16 = 2 x 8
5 หาร 35 ลงตัวเพราะ 35 = 5 x 7

ตัวประกอบ ของจำนวนนับ a คือ จำนวนนับที่หารจำนวนนับ a ลงตัว

เราเรียก

2 เป็นตัวประกอบของ 16 เพราะ 2 นำไปหาร 16 ได้ลงตัว
5 เป็นตัวประกอบของ 35 เพราะ 5 นำไปหาร 7 ได้ลงตัว

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Korean Dictionary

This collection of Korean to English and English to Korean dictionary contains an extensive vocabulary, including general, encyclopedic, slang and informal terms used in a variety of
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professional fields. Dictionaries have a searchable database of over 3 million words, phrases, abbreviations and acronyms, which are recognized by all possible inflections and derivatives, is subjective, objective or possessive form, in the form of polite, or regular or evena pronoun, conjunction or preposition.

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