40=?
To solve this problem, we need to find the value of .
Step 1: According to the properties of exponents, for any non-zero number , the zero power is always equal to 1.
Step 2: Here, our base is 4, which is a non-zero number.
Step 3: Applying the zero exponent rule, we find:
Thus, the answer to the question is , corresponding to choice 3.