What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

Decode this picture on T-Shirt and tell what it says ?

How many triangles can you count in the figure given?

On a magical land of Mexico , all the animal in the land are rational.

There are 10 tigers and one goat.
Tiger can eat goat but since it's a magical land , the tiger who eats the goat , turns into goat and then can be eaten by the remaining tiger(s).

If we leave them for some time then how many goat and tiger will be there , when we come back ?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Replace the question mark with the correct number below.