Question

Write all $3$ digit numbers taking each digit only once.

$1,3,5$

Answer 1

The given digits $=1,3,5$

we can make many numbers by following the instructions given below:

Fix any digit in the ones place and make a different number

repeat the above instruction until all numbers have been put in the ones place

Keeping $1$ in ones place we get$=531,351$

Keeping $3$ in ones place we get$=513,153$

Keeping $5$ in ones place we get$=315,135$

Thus,

All Three digits numbers obtained $=531,351,513,153,315,135$.