Sure, let's break it down:

1. First, add up all the digits in the number 210021000. That is, 2 + 1 + 0 + 0 + 2 + 1 + 0 + 0 + 0 = 6.

2. Since 6 is a single digit, we stop here.

So, the final digit is 6.

Question

Sure, let's break it down:

1. First, add up all the digits in the number 210021000. That is, 2 + 1 + 0 + 0 + 2 + 1 + 0 + 0 + 0 = 6.

2. Since 6 is a single digit, we stop here.

So, the final digit is 6.

Knowee AI · Accepted Answer

Sure, let's break it down:

1. First, add up all the digits in the number 210021000. That is, 2 + 1 + 0 + 0 + 2 + 1 + 0 + 0 + 0 = 6.

2. Since 6 is a single digit, we stop here.

So, the final digit is 6.

The sum of the digits was calculated for the number 21002 100 , then the sum of the digits was calculated for the resulting number and so on, until a single digit is left. Which digit is this?