/sci/ - Science & Math

>relevant christian news

>relevant

>christian news

>christian

>news

>relevant

>No one answers my original question
>Discusses an image I saved a long time ago

is /sci/ really that shit now where we can't have a proper discussion and our conversation stems from stupid memes like 'tier lists'?

time to find another place i guess.

Hey guys, could you help me out with this problem.

"A photo is being taken of Central High School's nine-member wrestling team. The team will stand in two rows, with the five shortest in the front row. The coach is also in the picture, in the middle of the back row. One of the taller boys is known to misbehave; to keep him from disrupting the photo session, he is placed next to the coach. How many possible arrangements of people are there for the photo?"

Now, I think this is a somewhat simple case of permutation. Since there are no restrictions on the front row, it's just merely 5! for that one. So, 120 arrangements in that one.

In the back row, the coach doesn't move. The misbehaving guy can be either to the left or to the right of the coach. The other three guys can be arranged as 3! so they get 6 possible arrangements.

Okay, so far so good. I managed to work out that much. So, here's where I got lost. In the book, where I got this problem, they multiplied those 3 numbers (120 x 6 x 2) and got 1440 as a result. I don't understand why. The way I see it, the front and back row have fixed arrangements, because of how things were set up (taller guys in the back, shortest in the front). So, shouldn't the values have been summed instead of being multiplied? I see the same issue in the back row. The misbehaving guy has 2 possible arrangements as he can only be next to the coach. So, I don't see why the book multiplied the amount of arrangements for that guy, and the ones possible for the other three.

So, the way I understand it, the answer have been 120 + 6 + 2 = 128.

What am I getting wrong?

Are the Project Euler problems possible to do without using a computer and writing code? I know that the first question is, but I have no idea about the others.

I tried using: "It has been proven that all items fall at the same speed in a vacuum. Why is that, even though a bowling ball feels heavier in your hand, and therefore is exerted to more force by gravity than a pen?"

But everyone just gave me answers in the sense of: "Because gravity pulls at a constant speed".

They don't even understand why that question could be confusing in the first place.

Is there any known way to just preserve the body indefinitely?

>>4636322
I can relate. I don't really know what to do about it though, except think to my self that what I do is indeed enough, and that even though it is good, others will and have topped it.

I think I'm smarter than all the scientists that specialize in this field and have my own theory which somehow unites gravity with the other forces while doing away with the obviously false notion of dark matter.

Srs question guys. I'm 22 year old and the only math / science education I got was during highschool. However I'm enjoying the subjects more and more at my own leasure and thinking Engineering might be a good route to go down. My concern is, though, with only having qualifications from high school, how I could get onto an Engineering course? What would I need to do? I'm from England btw.