Question

In each of the following, encircle the numeral which represents the greatest number:

$612,834,2092,7581,4985$

Answer 1

Find the greatest number:

Rule 1- A numeral containing more digits represents a greater number.

Rule 2- If the two numerals contain the same number of digits, we compare them by their left-most digit. If the left-most digits are also the same, we compare them by their next digits from the left, and so on.

Now, in this question numbers $612$ and $834$have only three digits while other numbers have four digits, so these two numbers are the smallest among them.

If we compare the remaining numbers, we get

$7>4>2$

$\Rightarrow 7581>4985>2092$

So, the greatest among them is $7581$.

Thus, the greatest number is $7581$.