You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

The more it dries, the wetter it becomes. Can you tell what it is?

A man dies of old age on his 25 birthday. How is this possible?

The more of this there is, the less you see. What is it?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

John drives to his office at 20km/hr. After reaching the office, he realizes that today is a holiday. He went back at an average speed of 30km/hr. Discounting the time spent in the stoppage what was the average speed of his journey?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?