Answer:
When is 1500 plus 20 and 1600 minus 40 the same thing?
What calls for help, when written in capital letters, is the same forwards, backwards and upside down?
One more than a duet.
Blue lives in the blue house, Mr. Pink lives in the pink house, and Mr. Brown lives in the brown house. Who lives in the white house?
Come up and we go, Go down and we stay.
I'm the source of all emotion but I'm caged in a white prison.