Find the Decimal Between 0.66 and 0.67: Inequality Problem

In order to discover our range of numbers, we will first add 0 to both numbers as follows:

$0.66=0.660$

$0.67=0.670$

This means our number will be in the range between 0.660 and 0.670.

The numbers that exist in this range are: $0.661\text{ }0.662\text{ }0.663\text{ }0.664\text{ }0.665\text{ }0.666\text{ }0.667\text{ }0.668,\text{ }0.669$.

Now if we look at the possible answers and compare them to our number range, we can deduce that the answer is 0.665 as it appears in both.