No one wants to have it, but if one got it, he does not want to lose it. What is It?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

How can you make number one disappear by adding something to it?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

Can you find out which triangle will have a bigger area among the following?
1. A triangle with sides 300, 400 and 500
2. A triangle with sides 300, 400 and 700