Three sealed boxes each contain one and only one type of balloon: either all red balloons, all yellow, or all blue, where each box contains a different type. They are labeled as shown.
However, the labels are mixed up and all the boxes are mislabeled — the label on the box is incorrect and that box does not contain the color of the label.
What's the minimum number of boxes you need to open before you know what is contained in all the boxes?
Answers
Answer:
1 box
Step-by-step explanation:
Inside the box is written the colour of balloons stored in it.
below the box is the label which is incorrect.
below the label are numbers representing each box so that i can explain easily.
so if i open box 1 i'll know that it has red colour balloons inside it. Also the label on the 3rd box isn't correct so i know that the 3rd box doesn't have blue colour balloon. so only 2nd box remains and it contains blue colour balloons. now only 1 box remains so that must mean it contains yellow balloons.
Likewise you can choose any 1 box and with similar working you can deduce the colour of balloon in the other 2 boxes. Therefore, minimum number of boxes i need to open to know what is contained in all the boxes is 1.