How can a man go eight days without sleep?

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 plane crashed between the border of Mexico and America. Where do you bury the survivors?

What shoe company does this rebus represent?

What four weights can be used to balance from 1 to 30 pounds?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.

What word begins and ends with an E, but has only one letter?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?