You are given two candles of equal size, which can burn 1 hour each. You have to measure 90 minutes with these candles.
There is no scale or clock. You are also given a lighter. How do you do it?
Riddle AnswerInterview Riddles
25 Horses
There are 25 horses and you need to figure out the 3 fastest horses by placing them into races. You can race 5 horses at a time. Each horse always finishes the race in the same amount of time and there are no ties. The only information you get from each race is the order that the 5 horses finished in. You will not get any information regarding the time taken for the horses to complete the race.
What is the smallest number of races you need to find the 3 fastest horses in order?
Riddle AnswerCoin in Glass Bottle
A guy claims to do the following thing. He puts a coin in a glass bottle. Then, he shuts the mouth of the bottle with the help of a cork. Now he manages to remove the coin out from the bottle without taking out the cork or breaking the glass bottle.
Do you know how he can do it?
Riddle AnswerBinoculars and Case Cost $100
When purchased together, a pair of binoculars and the case cost $100. If the binoculars cost $90 more than the case, how much does the case cost?
Riddle AnswerFive Pieces of Chain
A man has 5 pieces of chain that must be joined into a long chain. He can open ring 3 (first operation), link it to ring 4 (second operation), then unfasten ring 6 and link it to ring 7, and so on.
He could complete his task in 8 operations, but he wants to do it in 6. How does he do it?
Riddle Answer