Best riddles

cleancrazyfunnyshort

Three coats of paint

Jason decided to give his bike 3 coats of paint. Which coat would go on the first?
The second, as it is the only coat that can go on 'the first' coat.
83.08 %
41 votes

animalcleanshort

Silver in my track

If a man carried my burden He would break his back. I am not rich, but leave silver in my track.
Snail.
83.05 %
49 votes

cleanfunnyshort

A hungry donkey

A hungry donkey was tied to a rope eight feet long. About thirty feet away there was a basket of fresh carrots. The donkey wanted to eat those carrots. How did he reach them?
It's not tied to anything else!
83.05 %
49 votes

logicmathprobability

Threedoors, one prize

You are on a gameshow and the host shows you three doors. Behind one door is a suitcase with $1 million in it, and behind the other two doors are sacks of coal. The host tells you to choose a door, and that the prize behind that door will be yours to keep. You point to one of the three doors. The host says, "Before we open the door you pointed to, I am going to open one of the other doors." He points to one of the other doors, and it swings open, revealing a sack of coal behind it. "Now I will give you a choice," the host tells you. "You can either stick with the door you originally chose, or you can choose to switch to the other unopened door." Should you switch doors, stick with your original choice, or does it not matter?
You should switch doors. There are 3 possibilities for the first door you picked: You picked the first wrong door - so if you switch, you win You picked the other wrong door - again, if you switch, you win You picked the correct door - if you switch, you lose Each of these cases are equally likely. So if you switch, there is a 2/3 chance that you will win (because there is a 2/3 chance that you are in one of the first two cases listed above), and a 1/3 chance you'll lose. So switching is a good idea. Another way to look at this is to imagine that you're on a similar game show, except with 100 doors. 99 of those doors have coal behind them, 1 has the money. The host tells you to pick a door, and you point to one, knowing almost certainly that you did not pick the correct one (there's only a 1 in 100 chance). Then the host opens 98 other doors, leave only the door you picked and one other door closed. We know that the host was forced to leave the door with money behind it closed, so it is almost definitely the door we did not pick initially, and we would be wise to switch.
83.05 %
49 votes