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?⚡a7b6c8d9
Question
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?⚡a7b6c8d9
Solution
To solve this problem, we need to add up the digits of the number 210021000 until we get a single digit.
Step 1: Add the digits of 210021000 2 + 1 + 0 + 0 + 2 + 1 + 0 + 0 + 0 = 6
Since 6 is a single digit, we stop here.
So, the answer is 6 (option b).
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