Can you convert the number zero(0) into a positive number using just one mathematical operator ?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

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?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

How could a baby fall out of a twenty-story building onto the ground and live?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

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?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?