Question

The largest$4-$digit and smallest$4-$digit numbers formed by using the digits$4,0,3,7$each only once respectively are

• A. $4370,4307$
• B. $3740,3047$
• C. $7403,3704$
• D. $7430,3047$

Answer 1

The correct option is D

$7430,3047$

We have the numbers $4,0,3,and7$ here. The largest and lowest numbers must be found.

Let’s start with the greatest number. To do so, we must arrange the numbers in ascending order. The two arrangements of a series of numbers are known as descending order and ascending order. Descending order refers to the sequence of numbers being arranged from largest to lowest. i.e. the highest number should come first, and the smallest number should come last.