You have 20 buckets of blocks, a knife, and a weighing scale. Each bucket has 100 blocks. 19 of the buckets have blocks that weigh 16oz each, and one bucket has blocks that weigh 17oz each. How do you figure out which bucket has the 17oz blocks by weighing only once?
Riddle AnswerGood Riddles
3 Sacks of 30 Coconuts
An intelligent trader travels from one place to another with 3 sacks having 30 coconuts each. No sack can hold more than 30 coconuts. On the way, he passes 30 check points. At each check point, he has to give one coconut for every sack he is carrying. What is the maximum number of coconuts that he can have with him at the end of his journey?
Riddle AnswerThe 22nd and 24th President
The 22nd and 24th presidents of the United States had the same parents but were not brothers. They were both male, neither were adopted or “switched at birth”. How can this be possible?
Riddle AnswerSay Ten
Flashlight and 8 Batteries
You have 8 batteries (4 charged batteries, 4 uncharged batteries) and a flashlight which needs 2 charged batteries to work.
You do not know which batteries are charged and which ones are uncharged. What is the least number of attempts to make the flashlight work? (An attempt consists of putting two batteries in the flashlight and checking if the flashlight works or not.)
Riddle Answer