Question

can anyone help me simplify 2n!/(2n-3)!
Really haven't gotten the factorial concept yet :(

Answer 1

2n! / (2n-3)(2n-2)(2n-1)(2n!)

Then cancel 2n!

1/(2n-3)(2n-2)(2n-1)

Answer 2

2n *( 2n-1) * (2n-2)

Answer 3

yeah how did u get 2 2n*2n-1*2n-2????
Please explain :)

Answer 4

Sub x = 2n to make it simpler

Answer 5

x! / (x-3)! = x (x-1) (x-2)

Answer 6

This the basic definition of factorial:

\[\large n! = n \times (n-1) \times (n-2) ..................1\]

Here keep on decreasing 1..

Answer 7

Ty telliott99 & cwrw238 =) =)

Answer 8

compare

6! = 6*5*4*3*2*1

6 - 3 = 3

3! = 3*2*1

6! 6*5*4*3*2*1
-- = ----------- = 6*5*4
3! 3*2*1

Answer 9

Hope you've got it now.

Answer 10

yeah got it :D finally!!!