Evaluate the expression: 8! over 3! 5!?

Hi,

. 8!
------- = 8nCr3 = 56 <==ANSWER
3! 5!

I hope that helps!! :-)

8 !
------------------
3 ! 5 !

8 x 7 x 6
-------------
6

56

8! / 3!5!

= (8 x 7 x 6 x 5!) / (3! 5!)

= (8 x 7 x 6) / (3 x 2 x 1)

= 336 / 6

= 56

Its (8*7*6)/3! = 56.

8!/(3! * 5!)
= (1 x 2 x 3 x 4 x 5 x 6 x 7 x 8)/(1^2 x 2^2 x 3^2 x 4 x 5)
= (6 x 7 x 8)/(1 x 2 x 3)
= 336/6
= 56

8*7*6*5*4*3*2*1/3*2*1*5*4*3*2*1
8*7*6/6
56

n! = n(n-1)(n-2)(n-3)...(3)(2)(1)

8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 / 3 x 2 x 1 x 5 x 4 x 3 x 2 x 1 = 56.

Or you can use the nCr function on your calculator. Press [8] [nCr] [5] and your display should read 56.

= 56

lol i have no clue.i am only in the 6th grade.omg much math