Why is a manhole round? Why is it better to have round manhole covers compared to square manhole covers?
Riddle AnswerHard Riddles
Cake 3 Cuts 8 Pieces
You must cut a birthday cake into eight equal pieces, but you’re only allowed to make three straight cuts, and you can’t move pieces of the cake as you cut. How can you do it?
Riddle Answer8 Coins 1 Counterfeit
You have 8 identical-looking coins. One of these coins is counterfeit and is known to be lighter than the others. You also have a two-pan balance scale. How can you identify the fake coin by using the scale only twice?
Riddle AnswerTwo Trains and a Fly
Two trains travel toward each other on the same track, beginning 100 miles apart. One train travels at 40 mph (miles per hour); the other travels at 60 mph.
A fly starts flight at the same location as the faster train, flying at a speed of 90 mph. When it reaches the slower train, it turns around, flying the other direction at the same speed. When it reaches the faster train again, it turns around, and so on. When the trains meet, how far will the fly have flown?
Riddle AnswerEinstein Zebra Puzzle
This puzzle has been said to have been invented by Albert Einstein as a boy and some claim that only 2% of the population can solve it.
There are 5 houses in 5 different colors. All the 5 owners are of different nationality. The 5 owners drink different beverages, smoke different brand of cigars, and own different pets. No owners have the same pet, smoke the same brand of cigar, or drink the same beverage.
- There are five houses.
- The Brit lives in the red house.
- The Spaniard owns the dog.
- Coffee is drunk in the green house.
- The Ukrainian drinks tea.
- The green house is immediately to the right of the ivory house.
- The Old Gold smoker owns snails.
- Kools are smoked in the yellow house.
- Milk is drunk in the middle house.
- The Norwegian lives in the first house.
- The man who smokes Chesterfields lives in the house next to the man with the fox.
- Kools are smoked in the house next to the house where the horse is kept.
- The Lucky Strike smoker drinks orange juice.
- The Japanese smokes Parliaments.
- The Norwegian lives next to the blue house.
Who owns the zebra?
Riddle Answer