Question

Write the greatest and smallest $5$-digit numbers with the digits:

$3,6,9$

Answer 1

For the greatest number, select the smallest digit$3$, and write in the one's column. Next greater digit $6$is written in the tens column. The next greater digit $9$ is written in the hundreds column. Since no digit greater than $9$is given, so repeat $9$in the thousands column.

T-Th	Th	H	T	O
$9$	$9$	$9$	$6$	$3$

Therefore, The greatest number $=99963$

For the smallest number, select the greatest digit $9$and write in the one's column. Next smaller digit in the tens column and so on. Repeat the smallest digit in the left-most columns.

T-Th	Th	H	T	O
$3$	$3$	$3$	$6$	$9$

Therefore, The smallest number$=33369$