If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

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 ?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What word is identified by the below rebus?

Your Your Your Your Your
Your Your Your Your Your

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

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

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

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?