LCM of (6!,7! and 8!): n! = n(n - 1 )!Therefore, (6!,7! and 8!) can be rewritten as:8! = 8 X 7 X 6 !7!= 7 X 6!6!= 6!∴ LCM of (6!,7! and 8!) = LCM [8 x 7 x 6!, 7 x 6!] = 8 x 7 x 6 ! = 8!