Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

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.

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

What has a bottom at the top?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

When is the top of a mountain similar to a savings account?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

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 ?