Last Problem:
I have two coins that add up to 55 cents.
One of them is not a nickle. What are the
two coins?
Answer:
The two coins are a 50 cent piece and a nickle.
One coin is not a nickle. The other is a nickel.
Today’s Problem
What occurs once in a second, once in a month,
once in a century, yet not at all in a week or a year?