CareerCup

Remember that all boxes are labeled incorrectly.

The box marked "mixed" is not the mixed box. Pull a fruit from it. Say it's an apple. It must be the "apples" box.

The box marked "oranges" is not the box with oranges. It's also not the box with apples. It must be the "mixed" box.

There is one box left. It is neither the "apples" nor the "mixed" box. It must be the "oranges" box.

One fruit from each box or one fruit from any box?

The second box cant be mixed fruit box because then the third box will be labelled correct which is not the case.

Directly pick one fruit from box labeled Mixed(This is def going to contain only either of the fruit, because of incorrect label).. now correct name of this label can be found(If u get apple, the correct label for this is apple else orange). Now say u have got apple, the box which says Orange can only be Apple or mixed, now since we have found which is apple box, this can only be mixed. and finally the one that says apple is Orange box

Simplified:
Choose a fruit from the one marked mixed. Whatever comes out, ie an apple, take the label off the "apple" box and swap it with the "mixed" box. The "orange" box is still definitely wrong, so you then swap "orange" and "mixed" to get the correct sequence.

The key to the solution is given in the question "all the boxes are labelled incorrectly", so the "box with the mix of apple and oranges" should be either a "box with an apple" or a "box with an orange"

Step 1 : Pick up a fruit from the mixed box, if it is apple then the box is "apple only box", if it is orange then it is "orange only box".
Step 2 : Lets say we get "orange" from the "mixed box", so the box labelled as "only orange" should be mixed "mixed box", and the "apple only box" should be "orange only box

The solution is simple, get the label guy and kick his ass....