Question

Si: N=abb y CA(abb) = (a+1) a (a+1)

Answer 1

(9-a) (b-9) (b-10)=(a+1)a(a+1)
(9-a)=a+1
9-1=a+a
8=2a
4=a
b-9=a
b-9=4
b=9-4
b=5
abb=455
N=455