There are 5 pirates, A, B, C, D and E. They have a strict hierarchy, A is senior to B, B is senior to C, C is senior to D and D is senior to E. So it is like (A > B > C > D > E). These pirates have 1000 gold coins […]

There are 50 bikes, each with a tank that has the capacity to go 100 kms (when the fuel is full). Fuel tanks of all the bikes are full. Using these 50 bikes, what is the maximum distance that you can go?

Earlier we discussed, how to calculate total number of squares (of all sizes) on the chess board. Here, the problem is, How many rectangles (of any size) will be there on the chess board?

An honest man holds a card which can be either ‘1‘, ‘2‘ or ‘3‘. You can ask one (and only one) question to the man. The man is allowed to answer only ‘Yes‘, ‘No‘ and ‘I don’t know‘. The honest man obviously never lies. What question will you ask so that you get to know about the […]

Imagine you have infinite number of Queens. Find the minimum number of queens required so that every square grid on the chess board is under the attack of a queen. Arrange this minimum no. of Queens on a chess board.

A lady has 3 daughters, A man visited their house and asked the ages of her three daughters. The lady started giving him clues: Lady: Product of their ages (ages of her 3 daughters) is 72. Man did some calculations and says: The clue is insufficient to determine the ages. Lady: Ok, let me give […]

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were there at the party?

A certain town has 100 married couples (husband and wife only). Everyone in the town lives by the following rule: If a husband cheats on his wife, the husband is executed (killed) as soon as his wife get to know out about him (He may enjoy only as long as his wife does not get to know about […]

You have two identical eggs and access to a 100 floor building. You don’t know how strong the eggs are. Eggs can be really strong (may not break if dropped from 100th floor) or fragile (break if dropped from first floor). You want to find out the highest floor from where an egg can be […]

Two towns are exactly 100 km apart. Suresh leaves City-A at 3 pm driving at 30 km/hr. After 30 minutes, at 3:30 pm, Ramesh leaves City-B driving at 60 km/hr. When they meat each other, how far they will be from City-A ?