It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

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

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

If eleven plus two equals one, what does nine plus five equal?

Replace the (?) with the correct mathematical signs to make the expression equal to 59.

18 ? 12 ? 4 ? 5 = 59

What is the next number in this series?

4,12,84,3612....

What two things can you never eat for breakfast?