# On the situation where taking the numbers 123456 how many numbers can u form using 3 digits with no numbers repeated is that a permutation or combination?

##### 1 Answer

Jul 12, 2016

Combination followed by permutation:

#### Explanation:

Selection of 3 from 6 can be done in

From each selection of 3 distinct digits, the digits can be

arranged, differently, in

So, the number of 3-git numbers formed = the product

20X6=120.