Final answer:
After executing x=1/1, the type of the variable x in Python 3 is float, because the division operator performs floating-point division.
Step-by-step explanation:
In Python 3, the division operator / performs floating-point division regardless of the type of the operands. Thus, when the operation x=1/1 is executed, the variable x will be assigned the result of this division, which is 1.0. Therefore, the type of the variable x after the assignment will be float, even though both the numerator and denominator are integers. This is a change from Python 2, where the division of two integers would result in an integer (integer division).