@ @QPW@ @ÖïÐaínÜaì@Þî†bjnÜa@ @
.7 8
. 9 × 8 × 7 = 504
8 A
.ZAA AZA AAZ . 3 × 8 = 24
. 504 + 24 = 528 [MAΘ 2008] ( )
(0, 0)
(4, 4) (0, 0)
.
.(0,−1) (−1, 0) (0,1) (1, 0)
(4, 4) (0, 0)
5 (4, 4) (0, 0)
4
.
. 2 ×1260 = 2520 . 10! = 1260
10 4! ×5! ×1!
[MAΘ 2008] ( )