It belongs to you, but other people use it more than you do. What is it?

The captain of a ship is telling you an interesting story and then poses a question. He says, “I have travelled the oceans far and wide. 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. Can you tell me how that was possible?”

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What has no start, end, or centre?

Who has married many women but was never married?

I am white when I am dirty, and black when I am clean. What am I?

Can you find out the missing number in the grid?

A car is crossing a 20 km-long bridge. The bridge can support at most 1500kg of weight over it. If somehow, the weight on the bridge becomes more than that, it will break.

Now, the weight of the car is exactly 1500kg. At the midway, a bird comes and sits on the roof of the car. This bird weighs exactly 200 grams.
Can you tell if the bridge breaks at this point or not?

Can you count the number of matches in the picture below ?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?