Sequences, series & probability: Factorial

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March 18th 2009, 05:15 PM
KoolFlair

Sequences, series & probability: Factorial

I cannot figure out for the life of me how to do this. If anyone can help i would appreciate it! I need the first 3 terms and the eighth term of the sequence. Thanks

An= n!/(n-1)!
March 18th 2009, 05:37 PM
skeeter

Quote:

Originally Posted by KoolFlair

I cannot figure out for the life of me how to do this. If anyone can help i would appreciate it! I need the first 3 terms and the eighth term of the sequence. Thanks

An= n!/(n-1)!

note that $\frac{n!}{(n-1)!} = n$
March 18th 2009, 05:42 PM
KoolFlair

so would a1= 1?
Im confused on how to do this one because it is in a fraction form
March 18th 2009, 05:52 PM
skeeter

Quote:

Originally Posted by KoolFlair

so would a1= 1?
Im confused on how to do this one because it is in a fraction form

yes, and $a_2 = 2$ , $a_3 = 3$ , $a_4 = 4$ , ...
March 18th 2009, 06:03 PM
KoolFlair

thank you so much! I get it now!!

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