A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

A sundial has the fewest moving parts of any timepiece. Which has the most?

I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

During which month do people sleep the least?

When is the top of a mountain similar to a savings account?

What month of the year has 28 days?

Why is a river so rich ?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Before Mount Everest was discovered, what was the highest mountain in the world?