Let’s play a little game. Imagine taking 4 playing cards out of a deck. Two of them are red and the other two are black. We mix them up and place them face down on the table. I am going to ask you to turn two of the cards face up. If they are both the same (as in, if both of them are red cards or both of them are black cards) then you win. Otherwise, I win. Is that fair?
If you have not tried to solve it, have a go now. For everyone else, the answer is after the break.
Nope, it is not a fair game. Let’s imagine you start off by turning over a red card. Of the three remaining cards, two are black and one is red, and so you only have a one in three chance of winning.
Did you solve it? Any other answers?
I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.