There 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 AnswerInterview Riddles
Rectangular Array of People
In 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 Answer20 Percent off Sale Price
If the price off a dress was cut by 20% for a sale, by what percentage off the sale price must it be increased by to resell it at the original price?
Riddle Answer53 Socks
A 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 AnswerTwo to the Right
What 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
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