I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Find the next number in the series below.

6 18 270 72090 ?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

What has hands, but can’t clap?

How many triangles can you find in this given picture?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

A prisoner is told: "If you tell a lie, we will hang you and if you tell the truth, we will shoot you." What did the prisoner say to save himself?