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Комбинаторика: истина или ложь

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Комбинаторика: истина или ложь

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About this activity

Проверьте факты по комбинаторике.

Created by

Лиза Сергеева
Лиза Сергеева
Kazakhstan

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Комбинаторика: истина или ложь
 

Комбинаторика: истина или ложьOnline version

Проверьте факты по комбинаторике.

by Лиза Сергеева
1

Комбинации учитывают порядок элементов.

2

Число перестановок из n различных элементов равно n!.

3

Число сочетаний из n по k равно n!/(k!(n−k)!).

4

Комбинаторика изучает способы выбора и расположения объектов с учётом и без учёта порядка.

5

Перестановки из n элементов равны n^n.

6

Факториал n обозначается n! и равен произведению от 1 до n.

7

Бином Ньютона не используется в комбинаторике.

8

Число сочетаний из n по k равно n^k.

9

Принцип умножения говорит: если у первого шага a вариантов, а на втором — b, то всего a×b вариантов.

10

Число подмножеств множества из n элементов равно n!

 
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