# Logic riddles

## You saw me where I never was

You saw me where I never was and where I could not be. And yet within that very place, my face you often see.
Reflection.
67.63 %

67.62 %

## Hanging above water

A man is found hanging in a room 30 feet off the ground. There is nothing else in the room except for a large puddle of water on the ground. The police can't see any way the man could have climbed the walls to get to where he is hanging. How did this man hang himself?
He stood on a tall block of ice and put the noose around his neck. Once the ice melted, he was hung, and all that was left was a puddle of water on the ground.
67.59 %

## King has no family

A king has no sons, no daughters, and no queen. For this reason he must decide who will take the throne after he dies. To do this he decides that he will give all of the children of the kingdom a single seed. Whichever child has the largest, most beautiful plant will earn the throne; this being a metaphor for the kingdom. At the end of the contest all of the children came to the palace with their enormous and beautiful plants in hand. After he looks at all of the children's pots, he finally decides that the little girl with an empty pot will be the next Queen. Why did he choose this little girl over all of the other children with their beautiful plants?
The king gave them all fake seeds and the little girl was the only honest child who didn't switch seeds.
67.59 %

## Painting the doors

In a new Engineering Hostels they have 100 rooms. Ankit Garg was hired to paint the numbers 1 to 100 on the doors. How many times will Ankit have to paint the number eight ?
20 times. (8, 18, 28, 38, 48, 58, 68, 78, 98, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
67.57 %

## Valuable object send by mail

Suppose you want to send in the mail a valuable object to a friend. You have a box which is big enough to hold the object. The box has a locking ring which is large enough to have a lock attached and you have several locks with keys. However, your friend does not have the key to any lock that you have. You cannot send the key in an unlocked box since it may be stolen or copied. How do you send the valuable object, locked, to your friend - so it may be opened by your friend?
Send the box with valuable object and a lock attached and locked. Your friend attaches his or her own lock and sends the box back to you. You remove your lock and send it back to your friend. Your friend may then remove the lock she or he put on and open the box. Search: Man-in-the-middle attack
67.51 %

## You want me, when you don't have me

When you don't have me, you want me, but when you do have me, you want to give me away. What am I?
A secret.
67.50 %

## How far can you run

How far can you run into the woods?
Half way. If you go in any further, you’d be running OUT of the woods.
67.33 %

## Hidden treasure

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?
A map.
67.32 %