Challenge 13: Numerical Recycling
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Video Responses
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Followup Challenges
 Suppose we change Step 1 of the procedure so that we cube the number (instead of squaring). How would this change the overall behavior of the machine?
 Suppose we change Step 2 of the procedure as follows: If the digitsum has more than one digit, find its digit sum. Continue until the result has just one digit and pass this single digit back to Step 1. For instance, if we get the number 256 in Step 2, we find the digit sum 2+5+6 = 13. The sum has more than one digit and so we do the digitsum step again: 1 + 3 = 4. We send the result 4 back to Step 1. How would this change the overall behavior of the machine?