Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

What is harder to catch the faster you run?

Two boys were admitted to a school. When the headmaster asks them about their parents, they tell him that they have same parents (father and mother). On further inquiry, it turns out that they both share the same date for their birthday.

"Are you twins," ask the headmaster.
"No," replies the boys.

Is it possible?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?