In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

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?

Identify The phrase in the picture.

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

There are forty elephants and they have forty-fore heads. How can this be possible?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?