What is the easiest way to count from $82 to $512?

The easiest way to count from $82 to $512 is explained

Solution:

Given that, we have to find what is the easiest way available to count from $ 82 to $ 512?

Now, we want the count of number of dollars from $ 82 and $ 512.

So, we have different methods to count,

First way:

This way is to count by 1 starting from 82 till you reach 512.

This will go as follows:

82, 83, 84, 85, ...,510, 511, 512

Second way:

We can note that the two given numbers are even numbers. This means that the two numbers are divisible by 2.

Therefore, we can count by 2 starting from 82 till we reach 512.

This will go as follows:

82, 84, 86, 88, ..., 508, 510, 512

Third way:

We can note that the units digit in both numbers is the same (the digit is 2). This means that we can count from 82 till 512 by adding 10 each time.

This will go as follows:

82, 92, 102, 112, ...,492, 502, 512

Like this we can do with 20's, 50's and 100's.

4th way:

Suppose we want to count from a to b, then the count will be b - a + 1, this is the easiest method available.

Then, in our problem, a = 82 and b = 512

So, count = 512 - 82 + 1

Count = 430 + 1

Count = 431

Hence, the count is $ 431