## Trending News

Promoted

# If it says 2n! in my book, should I interpret that as (2n)! or 2(n!)?

### 10 Answers

Relevance

- DixonLv 71 month ago
Factorial only applies to the number it is next to, like powers.

So 2n! = 2 (n!) just like 2x⁷ = 2(x⁷)

- How do you think about the answers? You can sign in to vote the answer.
- PuzzlingLv 71 month ago
It should strictly be interpreted as 2(n!) because the factorial takes precedence over the multiplication.

That being said, if you want to describe the exact problem and the context, perhaps with a picture, I could tell you whether they were being sloppy or not.

- llafferLv 71 month ago
If it doesn't have parenthesis anywhere, then only the n has the factorial:

2(n!)

The same logic goes with exponents:

2x²

The 2 is not squared, but here it is:

(2x)²

- 1 month ago
2(n!). If they meant (2n)!, then they should have described it as such.

Still have questions? Get your answers by asking now.