Question

How many combinations can you make with the numbers $1,2,3$?

Answer 1

Finding the number of combinations that can made with the number $1,2,3$ :

Let us choose the numbers without repeating them.

The number of three-digit numbers can make using this number is

In a thousand places we have $3$ possibilities, hundred places we have $2$ and in-unit place we have $1$possibilities

So, the number of three-digit numbers can make using this number is $3\times 2\times 1=6$

Hence, the number of combinations can make with the number $1,2,3$ is $6$.