As well as the while statement just introduced, Python uses a few more that we will encounter in this chapter. if Statements: Perhaps the most well-known statement type is the if statement. For exa...

  docs.python.org

Let’s get back to the 3n+3 from the original example though. You can use it to select the “first n elements” with -n+3

  css-tricks.com

Набор символов теории множеств и вероятности с именем и определением: набор, подмножество, объединение, пересечение, элемент, мощность, пустой набор, набор натуральных / действительных / комплексных чисел...

  www.rapidtables.org

  pythonchik.ru

  math.stackexchange.com

  stackoverflow.com

  dzen.ru

:nth-child(-n + 3 of li.important) { }. This is different from moving the selector outside of the function, like ul.one > li:nth-child(-n + 3 of .noted) { background-color: tomato; border-bottom-color: seagreen

  developer.mozilla.org

  egeprograms.ru

  web-standards.ru

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