Fenton got this cute little penguin puzzle for Christmas, which the whole family has taken a liking to. Some days Fenton likes to dump all the pieces and stack them back up again. Other days he likes to dump all the pieces and use the base (that has a wooden rod to hold the pieces in place) and bang away like it's a hammer. While it does make a good hammer, I wish he wouldn't use it to pound imaginary nails into my knee. Kids and their imaginations these days!
But the rest of us feel the irresistible urge to see how many different ways we can arrange Mr. Penguin. Indeed, it seems that every time I walk by him, he's a changed man.
So this got me wondering: should I vacuum today or tomorrow? Oh, wait, that's silly of me. Why was I wondering that? Of course I need to vacuum both days. Pshaw! As if!
But I was also wondering: just how many ways can we arrange Penguin Jr? As I spent some time thinking about it, and consulting with Damon, I quickly realized that this is not only a complicated question, but it just might require that thing called math! [gasp!] I know, I know! I wasn't ready to face that fact either. I know I need a break already, how about you? Yes? Ok, break time. So everyone watch this video and then come back.
Feel better? Yeah, Star Wars dogs rock!
Ok, let's see if we can tackle this, shall we? Our mission, should you accept it, is to see how many ways we can arrange Senior Penguin.
So let's start out with the facts. Just the facts, ma'am. Ok, there are 7 pieces to the Perky Penguin puzzle - not including the blue hammer/base. Let's leave that out since it doesn't really factor for possible combinations, since it can only be on the bottom (or flipped upside-down to be on the top).
Are you still with me? It's going to get even more complicated in a minute, so if you need a short nap, I understand. In fact, let's just all go ahead and take a little siesta.
[Time passes... Snoring... Wiping off drool... Massaging keyboard prints off forehead...]
Oh, are we all back? Ok, good. Now where were we? Oh yes. So how many ways can we arrange The Penguinator's 7 pieces?
I think we need to think about what we are really asking here. More specifically, are we asking if it would be better to order a pizza or just make macaroni and cheese? Both have their advantages, obviously. Pizza = easy. Mac N Cheese = cheap. Oh, why can't I get Mac N Cheese delivery? Woe is me...
Oh, right. Sorry. My husband think my son's ADHD tendencies may come from my side. I don't really know what he's talking about. So have you solved the problem yet? You know, the Persnickety Penguin problem?
No?
Ok, fine. I guess I have to sit here and walk you through it. Did you understand the part about having 7 pieces? Yeah, ok good. So thinking about all of this, and searching through the Land of the Internet, I realized that if you type in "Gingrich" the first hit you get is "Mitt Romney for President." No joke...
Well played, Romney, well played.
I also realized that what we are dealing with here are permutations (not combinations). Permutations focus on the arrangement of objects with regard to the order in which they are arranged, whereas combinations focus on the selection of objects without regard to the order in which they are selected. For example, consider the letters A and B. Using those letters, we can create two 2-letter permutations - AB and BA. Because order is important to a permutation, AB and BA are considered different permutations. However, AB and BA represent only one combination, because order is not important to a combination. (Thank you, StatTrek!)
Got that? I just threw a whole lot at you. Sorry about that. Do you need another break? How about before we go on, we get a little refresher on math? I think we'll feel a bit more confident in our selves if we do so...
Oh man, I don't know what to say. I mean, math is really pretty easy after all, isn't it? I feel so much better.
Let's continue.
If we have 7 pieces, how many different ways can we arrange our Wacky Waddler? It turns out we need to work with something called a factorial (don't ask me how I know, I just know). Say it with me... ffffaaaaaccctttooorrriiiaaaalll. Good! A factorial really is just a fancy word for "a non-negative integer n, denoted by n!, that is the product of all positive integers less than or equal to n." Who knew? And I thought it was complicated math term.
For example, the factorial we'd use for our 7 piece puzzle would be:
7! or (7)(6)(5)(4)(3)(2)(1) = 5,040
Great! Wow, 5,040 is so many combinations.... err... sorry... permutations. I'm so glad I didn't try to take a picture of each one.
Oh, but I still am wondering something... No, it's not about vacuuming or pizza. Come on people, stay focused! What I'm wondering is what if we turn some/all of them upside down? The factorial we just did only is if everything is just one way. But we can have all facing up, all facing down, or 1 up/6 down, or 2 up/5 down, etc.
Wow! Ok! So what does that mean? Well it means things just got a whole more complicated. Yeah, I know... Need another break? Ok...
Back? Good. Let's think this through... So there are 5,040 permutations with all facing up. And there are just as many permutations with all facing down. And I'm guessing that each up/down set would also have 5,040 permutations. If I'm thinking this through right, it would be something like the following, since each piece can ONLY be up or down:
5,040 permutations of 0 up/7 down
+ 5,040 permutations of 1 up/6 down
+ 5,040 permutations of 2 up/5 down
+ 5,040 permutations of 3 up/4 down
+ 5,040 permutations of 4 up/3 down
+ 5,040 permutations of 5 up/2 down
+ 5,040 permutations of 6 up/1 down
+ 5,040 permutations of 7 up/0 down
--------------------------------------
= 40,320
Ahh! So our answer is 40,320. Excellent work everyone.
What? Say that again? That's not right. Almost right? What!!!
Ok, let me rephrase what I'm hearing you say: That's not taking into account each piece. Let's take the head, for example. The 1 up/6 down scenario works if you just take one piece, say the head, and use it as the only "up." But you could have just as many permutations if the "1 up" is the feet. Or the black bottom. Or the weird rubber flippers. Etc. And then for the 2 up/5 down, you'd have to do the permutations for each combination of twosies/fivesies.
Oh man, oh man, oh man! What have we gotten ourselves into? Is that a vortex opening up? I think I need to lie down.
[Lying down...]
Oh much better.
What? You still haven't solved it? Do I have to get back up? Fine.
[Getting up...]
It's obvious at this point that we are also working with event multiples. Yeah, I didn't know they existed until about 3 hours ago. Apparently it would work something like this:
We have 7 events (items), and each of those events can be either of two ways (up or down).
When you calculate the event multiples for this, you get 128. I can't really say what the formula is to calculate that, but trust me...truuussssssst me...I know what I am talking about. (Also, StatTrek has a neat calculator - go ahead, try it. See?)
Ok...so what does 128 have to do with the 40,320 we came up earlier? Hmmm....sounds like break time!
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All right. I know I feel better. Ok let's get this finished up. Re-runs of Three's Company are about to start and I can't have math on my mind for that. Are you with me? Who's with me!? Oh, you are. Good.
Ok, so I think what all this crazy stuff means is that there are 128 ways we can stack our lovely 40,320 Pretentious Penguin permutations. Does that sound about right? If I'm right, then there are 5,160,960 different ways we can arrange Papa Penguin.
Let's say that again (just for fun): 5,160,960. Or as Damon puts it, a ridiculously* huge number. Yeah, huge.
Now if I haven't thought this through right, and you think my calculations are off, please comment. I mean, really, what the hell do I know. Math is hard.
* You know what he really said.



























































