To weigh a 40-pound object with four weights – 1, 3, 9, and 27 pounds, the merchant placed all of the weights on one side of the scale and the object on the other side. But how did he weigh 5 pounds?
Riddle AnswerHard Riddles
10 Bags 100 Coins
There are 10 identical bags of coins. Each bag contains 100 coins. In one bag the coins are silver, in the others gold. All the coins are identical. A gold coin weigh 10 grams and a silver coin weigh a gram less.
Given a regular measurement scale, how would you determine in one weighing which bag does not have the gold coins?
Riddle AnswerClock Struck 21
One minute ago, a clock that strikes only the hours just finished striking an hour. If the clock has struck a total of 21 in the last 2.5 hours, what hour did it just finish striking?
Riddle AnswerPencil, Eraser and Notebook
A pencil, an eraser, and a notebook together cost $1. A notebook costs more than 2 pencils. 3 pencils cost more than 4 erasers. 3 erasers cost more than a notebook. How much does each cost?
Riddle AnswerClock Hands Overlap
Can you determine how many times do the minute and hour hands of a clock overlap in a day?
Riddle Answer