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4?

3^3 is 27 but 27^0 is still 1. 3^0 = 1 also and 3^1 = 3 so you get 3+1 = 4. But it's been a while since I've mathed so I'm probably forgetting something with regards to order of operations and exponents, lol.

Correct, bOOm !

It's true there is is an order of precedence for mathematical operators. It's also true that parentheses override normal operator precedence, form the innermost set of parentheses out. I forgot that detail earlier.

I was wrong. My final answer is 4.

Correct, bOOm !

(3^3)^0 + 3^(3^0) = 27^0 + 3^1 = 1 + 3 = 4.

Correct, bOOm !

Zero ??

It is 66 ??

(3^3)^0 + 3^(3^0) = 27^0+ 3^1 = 1 + 3 = 4.

I used Calculator.