It couldn’t even do basic math. Gemini explained me that 2 + 1 = 3 “is a common misconception that is often taugh in schools”. Then proceed to give a long explanation on how it isn’t 3 due to the order of operations, but actually 3.

When I replied “You are wrong, but you’ve got the spirit”, it “corrected” itself to 2 + 1 = 2.

I’ve seen a video of some woman trying to explain that 1 + 1 doesn’t equal 2, because 2 drops of water combined form 1 larger drop. Perhaps it was based on something like that.