How is my math:

[Subduction Zone]

A (!) Symbol means to do a factorial on the previous number in a math problem..

What are factorials, and how do they work?

The factorial of a whole number n, denoted as n!, is the product of all the whole numbers between 1 and n: 1×2×3×…×(n−1)×n. So 3! would be 1×2×3 = 6.

www.purplemath.com

In the spoiler that I posted there is a link to what double factorial!! is. With regular factorial one goes down by one. With double factorial one goes down by two's. 7!! = 7*5*3 = 105.

 

[Evangelicalhumanist]

196 - 182*0.5 = 7!!

Did I make any errors?

Your principle error was thinking that I would have enough mathematical sophistication to grok a double factorial.

 

[Daemon Sophic]

@Daemon Sophic

@Subduction Zone​

 

[Subduction Zone]

@Daemon Sophic

@Subduction Zone​

As I said earlier, my reaction was the same when I saw this, but I am so glad that I was a bit suspicious about the exclamation points.

I was trying to duplicate the learning experience that I went through. Now I doubt if anyone that went through this will ever forget what a double factorial is. There are limited mathematical uses for them. I know that I will never use them. But I know that they are out there.

 

[Subduction Zone]

Oh poop! It is gone. Luckily I am sneaky:
"

In the spoiler that I posted there is a link to what double factorial!! is. With regular factorial one goes down by one. With double factorial one goes down by two's. 7!! = 7*5*3 = 105.

Not according to my calculator. Which states 7!! As 4.529260E16473"

I will let the poster remain anonymous, but WoW!! That is some calculator. It must use a different algorithm than the ones I am used to where they would top out at around 70! And that was after it did each multiplication one after another.

I will link the article about double factorial without a spoiler so it is easier to find. Double factorial will be smaller or the same as single factorial. 2 is the last number where they are the same. After that double factorial will be smaller:

Double factorial - Wikipedia

en.wikipedia.org

 

[Brickjectivity]

196 - 182*0.5 = 7!!

Did I make any errors?

It looks unbalanced. Have you tried rebalancing it?

 

[Subduction Zone]

It looks unbalanced. Have you tried rebalancing it?

Hah! It is no more unbalanced than I am. And if I did that what fun would it be?

 

[Brickjectivity]

Hah! It is no more unbalanced than I am. And if I did that what fun would it be?

What does it say about a man when he likes to throw double factorials into his equations? Just buy some cigars.

 

[Revoltingest]

196 - 182*0.5 = 7!!

Did I make any errors?

The biggest problem I see is that 7! = 5040
7!! = 5040!
That is a huge number, & far greater
than anything on the left side of that
equation.

 

[Subduction Zone]

The biggest problem I see is that 7! = 5040
7!! = 5040!
That is a huge number, & far greater
than anything on the left side of that
equation.

No, that is an "iterated factorial"

"Because the double factorial only involves about half the factors of the ordinary factorial, its value is not substantially larger than the square root of the factorial n!, and it is much smaller than the iterated factorial (n!)!."

Double factorial - Wikipedia

en.wikipedia.org