Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

A frog is at the bottom of a 30-meter well. Each day he summons enough energy for one 3-meter leap up the well. Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards. How many days does it take him to escape from the well?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

There is a circular car race track of 10km. There are two cars, Car A and Car B. And they are at the exact opposite end to each other. At Time T(0), Both cars move toward each other at a constant speed of 100 m/seconds. As we know both cars are at the same speed they will always be the exact opposite to each other.
Note, at the center, there is a bug which starts flying towards Car A at time T(0). When the bug reaches car B, it turns back and starts moving towards the car A. The speed of bug is 1m/second. After 5 hours all three stop moving.
What is the total distance covered by the bug?

Can it be possible to build a house that has all its four walls facing towards the South?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Find the last number in the series below:

voN luJ yaM raM ---

Can you count the number of squares in the given picture?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

What has no start, end, or centre?