I see Baba is you. I click Math is you :D
Great polish. Interesting idea. Although I found it quite difficult. I really thought a lot about level 5. But I could'nt do it to no avail.
I believe in logic you don't have these many combination possibilities. For example in Level 5 you have 5 like 5 numbers and 4 operators. That is a lot of combinations.
Nonetheless. I enjoyed it!