You see, a boat filled with people riddle is a fascinating and trick riddle. The answer to this riddle is given below and the question is not related to maths, and no calculation is required to solve the puzzle.
Its a simple logic puzzle just read the riddle carefully and you fill find the answer in the question itself.
Riddle: You see a boat filled all with people and You look again towards it but this time you don’t see a single person on the boat this time Why?
Answer: The answer to this riddle is “all the people on the boat are Married.”
The single word denotes to the unmarried persons on the boat. That’s why you don’t see a single person when you look again. This riddle answer is not about the numbers its about the words and its meaning.