Answer:
What occurs four times in every week, twice in every month, only once in a year but never in a day?
What goes up when the rain comes down?
What has 4 fingers and a thumb, but is not living?
The more you take, the more you leave behind. What are they?
When is 1500 plus 20 and 1600 minus 40 the same thing?
I am a room that has a roof but no walls. What am I?