What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What number when divided in half becomes zero?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

A bomb exploded in a room full of married couples and no one died. How?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

A boy was at a carnival and went to a booth where a man said to the boy, "If I write your exact weight on this piece of paper then you have to give me $50, but if I cannot, I will pay you $50." The boy looked around and saw no scale so he agrees, thinking no matter what the carny writes he'll just say he weighs more or less. In the end the boy ended up paying the man $50. How did the man win the bet?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

Can you write down eight eights so that they add up to one thousand?