In an Island the natives lie and visitors speak truth. A man wants to know whether a salesman beside him in a bar is a native or a visitor.
He asked him to ask a woman beside him whether she is a native or visitor. He replied, “She says she is a visitor.” Then he was immediately able to determine if the salesman is a native or a visitor. Is the salesman a native or a visitor?
Riddle AnswerThere are 6561 balls. One of the balls is heavier than the others. You are provided with a two pan balance scale. Find the minimum number of weighings needed to identify the heavier ball correctly.
Riddle AnswerIn a rectangular array of people, who will be taller: the tallest of the shortest people in each column, or the shortest of the tallest people in each row?
Riddle AnswerWhat letter is two to the right of the letter which is four to the left of the letter which is immediately to the right of the letter four to the right of the letter C below?
A B C D E F G H
Riddle AnswerA man has 53 socks in his drawer: 21 identical blue, 15 identical black and 17 identical red. The lights are fused and he is completely in the dark. How many socks must he take out to be 100 percent certain he has a pair of black socks?
Riddle Answer