okay...i just don't seem to get this problem. It has to do with factorials....

If 4! = 4 x 3 x 2 x 1 OR 4(4-1)(4-2)(4-3)

and 4!/2! = 4 x 3 x 2 x 1/2 x 1 = 12




FIND: (n-1)!n/(n+1)!

Yeah...I'm pretty much lost. Can someone explain to me how to solve it, not the answer but maybe a way to get me started or uh, how to do it.

Ok, well for the numerator, it is the same as n! (since you have (n-1)!, and then are multiplying by n) and the denominator is (n! * (n+1)). And then you can cancel out the n!