When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

How can you tell a raw egg from a hard-boiled egg?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Complete the table series riddle by finding the number that can replace "??".

If two's company, and three's a crowd, then whats four and five ?

There is a place where if I stand up straight, I will still be considered sideways.

What has no start, end, or centre?

I’m tall when I’m young, and I’m short when I’m old. What am I?

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 ?