Código
{n!= n(n-1) (n-2) ... 3 x 2 x 1}
var Count: LongInt;
FNbr: Extended;
begin
FNbr:= 1;
for count:=1 to Number do
FNbr:= Count*FNbr;
Result:= FNbr;
end;
function Binomial(n1,n2: Int64): Extended;
{n1!/n2!*(n1-n2)!
var n3: Int64;
begin
n3:= n1-n2;
Result:= Fatorial(n1)/(Fatorial(n2)*Fatorial(n3));
end;
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