Mind bogglers are problems in which solutions are simple and straightforward, but for some reason or other run counter to human intuition.
Today I present to you with two classic mind bogglers. Let’s see what we can learn from them.
The first one is a classic and I’m sure many of you actually know it:
Three travelers go into a hotel and are charged $30 for a room. They each contribute $10. That evening the hotel manager realizes that the men were overcharged. They should have got a group discount and paid $25. So he sends a bellhop up to the room to return $5. The three travelers however cannot equally split the $5, so they give the bellhop $2 as a tip and keep $3 which they split among themselves - $1 each.
Now each traveler has paid $9, for a total of $27. The bellhop has2$. So $29 is accounted for.
Where has the 30th dollar gone?
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