What is both possible and impossible at the same time?

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

When it's bad luck to meet a black cat?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Which letter of the alphabet has the most water?

Count the number of triangles in the given picture.