You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

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

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Why is the Hole below a Lock?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

Who always enjoys poor health?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?