Among natural numbers, it refers to numbers that are divisible by 2, such as 2, 4, and 6. In other words, it is a number that is written as twice another natural number. Therefore, even numbers are expressed in the form of 2 x n (n is a natural number). Natural numbers are either even or odd. In the phrase "even and half," the "even" refers to an even number. The following can be said about even numbers. The sum of two even numbers is an even number. Also, the product of two even numbers is an even number. [Tatsuro Miwa] [Reference] |Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
自然数のなかで、2、4、6のように2で割り切れる数をいう。つまり、ある自然数の2倍の形に書かれる数である。したがって、偶数は2×n(nは自然数)の形に表される。自然数は偶数か奇数かのどちらかである。丁半というときの丁が偶数を意味している。偶数については次のことがいえる。二つの偶数の和は偶数である。また、二つの偶数の積も偶数である。 [三輪辰郎] [参照項目] |出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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