I didn't see that the check for the multiplication symbol was commented out for this test suite until I checked your solution...
Sorry about that. I added a statement that that function restriction is lifted in the problem description. Still, I'm impressed that you were able to solve it without using that function.
No worries. Multiplication without the * symbol is easy enough. There's a reason the final variable in my first solution is named "cheat" though; I had no idea how to accomplish the final check otherwise.
Well, I'll take that as a compliment, then, because your problems are clever and often stump me.
Sums with Excluded Digits
The Goldbach Conjecture, Part 2
Reverse the Words (not letters) of a String
Change the sign of even index entries of the reversed vector
Dice roll - lateral faces
Rule of mixtures (composites) - reverse engineering
5th Time's a Charm
Lights Out 9 - 5x5, light-only solution? II
Pattern Recognition 1 - Known Unit Length
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