Question

Arrange the following numbers in ascending order:

$847,9754,8320,571$

Answer 1

Methodology to compare numbers:

There are two cases:

Case $\mathrm{I}$: When the numbers to be compared have different number of digits, a number containing more digits excluding $0$ at leftmost position represents a greater number.

Case $\mathrm{II}$: When numbers to be compared have the same number of digits then that number, which has a greater leftmost digit, is larger. If this digit also happens to be the same, we look at the next digit and so on.

Here, $847$ and $571$ have same number of digits but, $8>5$, So $847>571$

$9754$ and $8320$ have same number of digits but, $9>8$, So $9754>8320$

Therefore, the ascending order of numbers is $571<847<8320<9754$