3 barrel question / logic puzzle

[LAZYANGEL]

First of all, this is NOT a homework question.

So I give you three barrels, one has 50 apples, the second has 50 oranges, the third has 50 - a mixture of both apples and oranges.

However, I have intentionally placed the wrong labels on all of them.

Find the minimum number of fruits you need to draw to get the right labels! (also explain please)

(I have managed to figure out the answer in under one minute, see how fast can you figure it out.)

 

[RUber]

I think 52--if you have no information about how many of each fruit is in the mixed barrel.