When can you add two to eleven and get one as the correct answer?

How many eggs can you put in an empty basket one foot in diameter?

Where can one stand up straight, but still be considered sideways?

What can go up a chimney down but can’t go down a chimney up?

What year comes next in this sequence: 1973 1979 1987 1993 1997 1999

A girl was eight years old on her first birthday. How could that be?

How is it possible to shave three times a day and still grow a beard?

How many times can you subtract 5 eggs from a carton holding 25 eggs?

Three times what number is no larger than two times that same number?

You draw a line. How can you make the line longer without touching it?

What is the next number in the sequence? 1, 11, 21, 1211, 111221, 312211

What would you father’s only sister’s sister-in-law be to you?

What unusual property do the words FLOUR, TERN, and THIRSTY have in common?

A clock strikes six in five seconds. How long will it take to strike eleven?

When my father was 31 I was 8. Now he is twice as old as I am. How old am I?