Nine years ago Karen was in her prime, eight years ago she was a power of a prime, and last year Karen was really odd.

How old is Karen now?

**The Puzzle Page is dedicated to bringing you the best puzzles collected from around the world along with original puzzles not seen anywhere else.**

The staff at The Puzzle Page always enjoy seeing new puzzles and would love to hear from you. If you have a puzzle that's giving you problems, drop us a line -- we'd love to help.

The staff at The Puzzle Page always enjoy seeing new puzzles and would love to hear from you. If you have a puzzle that's giving you problems, drop us a line -- we'd love to help.

## Monday, March 24, 2008

## Monday, March 17, 2008

### Dodecahedron

This is an extremely difficult problem and may take up days of your time to figure out.

A regular dodecahedron has twelve pentagonal sides and twenty vertices. Assuming that one face is in the X-Y plane with an edge along (0,0,0) to (0,1,0), what are the coordinates of the remaining 18 vertices?

*Image created using Robert Webb's Great Stella software: http://www.software3d.com/Stella.html*

## Friday, March 14, 2008

### Dropdown Puzzle

These puzzles are sometimes called

*droplines*or*quotefalls*. Fill in the squares with the letters found in the column in the top part of the diagram. When correctly filled out you will see a quote.## Thursday, March 13, 2008

### Still the same...

A reader asked the following puzzle:

"I have five letters. If you take the first and the last I will still be the same. Even if you take the middle letter I will be the same as before. What am I?"

Can you guess the correct answer?

"I have five letters. If you take the first and the last I will still be the same. Even if you take the middle letter I will be the same as before. What am I?"

Can you guess the correct answer?

## Tuesday, March 11, 2008

### O T T F F S S E

A reader wonders what the next letter in the following series should be:

O T T F F S S E ...

Can I count on you to help them out?

Can I count on you to help them out?

### The Twins' Birthdays

A young woman celebrated her birthday on the anniversary of her birth date. Two days later her twin sister celebrated her birthday on the anniversary of

How can this be true?

*her*birth date.How can this be true?

## Monday, March 10, 2008

## Thursday, March 6, 2008

### The Three Beggars

A charitable lady met a poor man to whom she gave one cent more than half of what she had in her purse. The poor fellow, who was a member of the United Mendicants' Association, managed, while tendering his thanks, to chalk the organization's sign of "a good thing" to her clothing. As a result, she met many objects of charity as she proceeded on her journey.

To the second applicant she gave 2 cents more than half of what she had left. To the third beggar she gave three cents more than half of the remainder. She now had one penny left.

How much money did she start out with?

To the second applicant she gave 2 cents more than half of what she had left. To the third beggar she gave three cents more than half of the remainder. She now had one penny left.

How much money did she start out with?

## Tuesday, March 4, 2008

### Leap Babies

I'm sure you're aware that a year is defined as the number of days it takes for the Earth to revolve about the sun. That time is not evenly divisible into the number of hours it takes for the Earth to revolve on its axis, which is how we define the length of a day. What that all means is that instead of being exactly 365 days, a year is closer to 365¼ days.

In order to account for that extra ¼ day, we add an extra day to the calendar every four years and call that year Leap Year and the extra day is sometimes called Leap Day, which falls on February 29 in a Western calendar.

Now here's the puzzle for today: Assuming a regular birthrate, what percentage of the population celebrates their birthday on February 29?

In order to account for that extra ¼ day, we add an extra day to the calendar every four years and call that year Leap Year and the extra day is sometimes called Leap Day, which falls on February 29 in a Western calendar.

Now here's the puzzle for today: Assuming a regular birthrate, what percentage of the population celebrates their birthday on February 29?

Labels:
algebra,
high school,
IQ,
math,
probability,
problem,
puzzle,
trivia

## Monday, March 3, 2008

### The Puzzle Page Conundrum

The title of this blog page,

Can you arrange these nine letters in a 3x3 grid so that, starting with the letter T, and moving one square at a time you trace a path that spells out the name

You may move one square orthogonally or diagonally and you may stay on the same square for both instances of the letter Z.

There is more than one solution. How many can you find?

__, is written using nine distinct letters: A, E, G, H, L, P, T, U, and Z.__*The Puzzle Page*Can you arrange these nine letters in a 3x3 grid so that, starting with the letter T, and moving one square at a time you trace a path that spells out the name

__?__*The Puzzle Page*You may move one square orthogonally or diagonally and you may stay on the same square for both instances of the letter Z.

There is more than one solution. How many can you find?

Labels:
brain,
elementary,
high school,
puzzle,
teaser

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