If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Which is faster, Heat or Cold ? Explain.

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

Can you solve the below geography rebus by decoding the below rebus ?

What Adam and Eve do not have but the rest of the people have?

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?

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