Question 1032902
For the first question there are two possible incorrect choices.
For the 2nd question there is only one possible correct choice, while the 3rd question has two possible incorrect choices.  All in all there are {{{3^3  = 27}}} ways of answering the three questions.

Hence the probability is {{{(2*1*2)/3^3 = 4/27}}} that she will answer only the second question correctly.