Question

Someone's mom has four sons North, East and West. What is the name of the fourth son.

Answer 1

I think the correct answer is South.

The name of other three sons are North, East and West.

As we can see that all of them are the names of directions.

There are a total of 4 directions, but the mother has named only 3 sons.

4th son will be named as South to complete the family name.

Answer 2

You should notice that in the question someone has an apostrophe ‘S’, which indicates that someone is the name of a person rather than just a word to define a vague object.

Therefore, the name of the fourth son has to be ‘someone’.  There are no two ways about it.

Although, the other sons have names such as North, East and West, still the answer here would be ‘Someone’.