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.
The Goldbach Conjecture
All your base are belong to us
Make an awesome ramp for a tiny motorcycle stuntman
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
03 - Matrix Variables 4
Pattern Recognition 3 - Variable Unit and Array Length (including cell arrays)
Mersenne Primes vs. All Primes
Combined Ages 2 - Symmetric, n ≥ 3
Lights Out 1 - 5x5, 3 moves
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