Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
SPOILER FLAG! DAMN YOU!!
22 in the test Series is correct.
Base Series 1,2,4,8.16,22
Test Series 15,20 (first iteration) ,22 (2nd iteration)
Number of iterations in the Test Series to Converge => 2
You only count the number of iterations you need in the Test Series to get to a number in the Base Series.
No, the "original number" here is 20 (yes, this a really bad choice of words).
Multiply all the non-zero digits and add the result to the original number