3 to the negative power of 3?

Answer 1

3^(-3) = 1/3^(3) = 1/27 = 0.037037037.... ( recurring to inifinity).

Answer 2

3-3 = 1/33 = 1/27 = 0.037037...

Note the first answer [3-3 =.003] is incorrect. But .003 = 3 x 10-3 , probably the origin of that answer.