Originally answered : Someone’s mom has four sons North, East and West.What is the name of the fourth son. Can you guess the name of the fourth son?
The most accurate answer is as follows:
The very first line states, “someone’s mother has… “ and so on. From this, one can ascertain that the the name of the fourth child is “someone”.
However, if one looks at the names of the other children (North, East, West), it seems very likely that the name of the fourth child is “South”, which is in keeping with the pattern (the cardinal directions).
And finally, the way the question is phrased, it seems that no matter what the name of the fourth son is, the answer to the question can only be ‘yes’ or ‘no’.
From the last line : “Can you guess the name of the fourth son?”.
Additionally, I’m not sure whether this is a mistake or not, but in the middle sentence (What is the name of the last son.) a full stop is used instead of a question mark. This would mean that the son’s name is ‘What’, unlikely as it seems.