Question

a
!
=
a
(
a
−
1
)
(
a
−
2
)
(
a
−
3
)
.
.
.1
, then find X
+
Y
+
Z
, given that X
Y
Z
is a three digit number such that X
Y
Z
=
X
!
+
Y
!
+
Z
!
.
11
10
9
8

Answer 1

I CANT UNDER STAND THE QUESTIONS