Question

Each of these labelled bags contains two apples.

Answer 1

Answer:

bag 3

Step-by-step explanation:

Let's call the labels "green", "red", and "mix".

Pick mix for two reasons :

1. First, it's not mixed so whatever color you pick is the color of the pair.
2. Also, if you pick from either of the other two, you can't know if it's a mixed bag or not.

So, let's pretend you pick a red out. Move the label red to the bag. This must be true - cannot be a mix.

Now, you have the mix label in your hand, one bag with a label (green), and one bag without a label (previously red).

Since all bags mislabeled to begin, move the green label to the blank bag - since this label must be wrong.

Put the mix label on the remaining bag.