<span>A) 3 - The third sock will match the first or second if they don't match each other. B) 14 - It's highly unlikely yet possible to remove all brown socks first, the next two would have to be black.</span>
Divide 24 by 6 in order to see how many six second intervals there are. 24/6=4. Multiply 4x5 to show many stories the elevator travels. The answer will be 20 stories.