Rubén Felgaer was born in 1981.

I say yayi !yayi! yayi!I look into the mirror n congratulate myself.I want to cook something especially desserts.If husband is present there that time then i kiss n hug him.we go somewhere to party or help someone in some work either it may

be a stranger even

The Rub - 2013 Pilot 1-1 was released on:

USA: 10 October 2013

Successor of n=n+1

Predecessor of n=n-1

Sum=[n+1]+[n-1]

Plus 1 plus minus 1=

[1]+[-1]=0

[n][n]

=2n

Hope this helps

n! = n * (n-1) !

n!/n = n*(n-1)!/n //divid by n both sides

n!/n = (n-1)!

let n = 1

1!/1 = (1-1)!

1 = 0!

Hence proved that 0! = 1.